1. Report Industry Investment Rating No relevant content provided. 2. Core Views of the Report - **Polyolefin Industry**: The intraday disk and spot prices fluctuated greatly, and trading weakened. The upgrading of the geopolitical situation in the Middle East pushed up international oil prices, strongly boosting the market from the cost side. The supply side showed differentiation, with high domestic PE supply and increased losses in oil - based and naphtha - based routes; PP production was slow due to planned maintenance in March and rising raw material prices. The demand side was affected by the Spring Festival holiday, with downstream factory operating rates at a seasonal low. Although the current industry profit is in a historically low range and the real - world fundamentals are under pressure, the market has strong expectations for post - holiday restocking demand from downstream concentrated resumption of work. [1] - **Methanol Industry**: Methanol futures fluctuated widely, and spot and near - month contracts were purchased on - demand. The overall trading for the day was okay. The escalation of the Middle East conflict and shipping disruptions in the Strait of Hormuz limited Iranian methanol exports, triggering market concerns about a global supply interruption and a significant increase in geopolitical risk premiums. Fundamentally, domestic operating rates remained high, but the import side was affected by the geopolitical conflict, with increased instability of facilities and a significant decline in March arrivals. The demand side was weak, with poor olefin demand at ports and a delay in the start - up of new MTO plants. Port inventories were at a historically medium - high level, but there were expectations of destocking due to the expected reduction in imports. [3] - **Crude Oil Industry**: Overnight, the WTI April contract closed at $81.01 per barrel, up 8.51%, and the Brent May contract closed at $84.48 per barrel, up 3.78%. The sharp increase in freight rates made the delivery cost of SC futures more than $15 above Brent, and the domestic premium continued to rise. If the passage through the Strait of Hormuz remains blocked, oil prices will continue to rise significantly; if the Strait of Hormuz resumes normal passage, oil prices will face the risk of a large - scale return of geopolitical and freight insurance premiums. Historically, the impact of geopolitical conflicts on oil prices is mostly short - lived. After four consecutive days of sharp increases, long positions should be held with caution. [5] - **Urea Industry**: On the 5th, urea futures declined after reaching a high, and spot prices remained weak. The supply side had a slight increase in the operating rate this week, with daily production exceeding 220,000 tons, resulting in short - term supply pressure. The demand side had stable demand for agricultural green - turning fertilizers, and the demand for industrial compound fertilizers and board factories was gradually recovering. Affected by the domestic urea guidance price limit and the lack of new export news, the market was mostly on the sidelines regarding high prices, and downstream factories mostly purchased on - demand. In the short term, urea prices are expected to continue to trade in a high - level consolidation range. [8] - **PVC and Caustic Soda Industry**: On the 5th, caustic soda futures hit the daily limit, and spot prices remained stable overall. High - concentration caustic soda exports showed a good trend, and the production of 50% caustic soda in the province had not fully recovered, so high - concentration caustic soda may have a certain upward trend in the short term. The supply side had a slow recovery of caustic soda plant loads, and there was still pressure on industry inventory accumulation. The demand side had stable demand from the main alumina downstream and an improvement in non - aluminum downstream demand, which supported the caustic soda price. The increase in liquid chlorine prices further improved the comprehensive profits of chlor - alkali enterprises. PVC spot and futures prices fluctuated upward. The supply side maintained a high level, and domestic demand was normal. Foreign trade exports were affected by unstable freight rates and were waiting for new quotes. The cost - end transmission from crude oil - ethylene - PVC was uncertain, and the market sentiment was affected by concerns about energy. [9] - **Glass and Soda Ash Industry**: The futures of soda ash main contract SA605 oscillated upward, closing at 1,225 yuan/ton. The supply side had a slight increase in weekly production, and there were expectations of supply contraction due to shutdown and maintenance. The demand side had a general trading atmosphere, with low - price transactions being the main focus. The inventory in factories reached a new high. In the current situation of weak demand and high inventory, caution should be exercised regarding upstream manufacturers. The futures of glass main contract FG605 increased slightly, closing at 1,055 yuan/ton. The downstream resumption of work was less than expected, and the trading atmosphere was light. The supply side had a low daily melting volume, and the demand side was restricted by weather and environmental protection policies, with delayed full - scale resumption of work and mainly inventory digestion after resumption. The inventory of production enterprises continued to accumulate significantly. [10] - **Natural Rubber Industry**: On the supply side, overseas raw material prices have been rising weakly recently, and with the approaching of the domestic production area tapping window, the market's expectation of new supply has increased. On the demand side, the semi - steel tire market was relatively stable, with post - holiday regular restocking in the domestic market, and individual dealer order fairs boosting channel purchase demand, and a significant increase in terminal retail sales volume; exports were affected by the weakening of the European and Middle Eastern markets, but the EU has not yet implemented a temporary anti - dumping tax, and overall orders still had resilience. The all - steel tire domestic market had concentrated restocking, and dealer order fairs boosted purchase enthusiasm, with good overall channel purchase sentiment; exports were under significant pressure, and the shipment to the Middle East and European markets weakened. Overall, although the domestic restocking of all - steel tires provided short - term support, the drag of overseas geopolitical risks on tire exports was more persistent, and the demand side generally suppressed rubber prices. However, geopolitical conflicts also made BR difficult to fall and provided some positive support to rubber prices. In the short term, rubber prices are expected to oscillate. [11] - **LPG Industry**: The prices of LPG futures contracts declined. The inventory of LPG refineries and ports increased, and the operating rates of upstream and downstream industries showed different trends. The upstream main refinery operating rate remained unchanged, the sample enterprise weekly production - sales rate decreased slightly, the downstream PDH operating rate decreased, and the MTBE and alkylation operating rates remained stable. [13] - **Pure Benzene - Styrene Industry**: Affected by geopolitics, the transportation of crude oil has been blocked recently, and the operating expectations of Asian refineries have been affected. Some domestic and foreign refineries have made defensive load adjustments, and combined with some device maintenance plans, the supply of pure benzene is expected to decline. The profit of the downstream styrene industry has been significantly repaired, and the load has remained at a relatively high level, with strong short - term demand support. Although the supply - demand expectations of pure benzene have improved, due to the remaining import pressure and the high inventory at ports, the self - driving force of pure benzene is still limited, and its price follows the fluctuations of oil prices and downstream styrene. For styrene, due to good industry profits, the load of styrene factories has increased significantly. In March, some styrene devices are expected to restart, but there are also some device maintenance plans, so the supply increase in March is expected to be limited. The demand side has a gradual recovery of post - holiday downstream demand, and combined with previous export shipments, the supply - demand of styrene in March is expected to have a slight destocking. Recently, oil prices have been strong due to the boost of the Middle East geopolitical situation, and combined with the blocked export of styrene from the Middle East due to transportation, domestic styrene has new export orders, and it is expected to be boosted in the short term. [16] - **Polyester Industry Chain**: Affected by geopolitics, some domestic and foreign refineries have made defensive load adjustments, and the supply of PX is expected to decline. Starting from March, some domestic and foreign maintenance plans will be implemented one after another. Combined with the early restart or load increase of some TA devices due to improved processing fees after the holiday, the supply - demand expectations of PX have improved. The Middle East geopolitical situation also provides cost - side support to PX, and PX is expected to be strong in the short term. After the holiday, the load of PTA has increased, and the March PTA device maintenance plan may be less than expected. Affected by the Middle East geopolitical situation, the sharp rise in oil prices has driven up the prices of the industrial chain, but the increase in the spot price of raw material PX is greater, and the PTA processing margin has been compressed. The short - term self - driving force of PTA is limited, and its absolute price follows the cost - side fluctuations. The Middle East geopolitical situation is tense, and the short - term crude oil price is expected to continue to rise, which enhances the cost support for ethylene glycol. In March, the domestic supply of ethylene glycol will significantly decline, and the arrival volume of foreign ships will be at a low level from mid - March. At the same time, the polyester load will seasonally recover in March, and ethylene glycol is expected to have a slight destocking. Currently, the supply and demand of short - fiber are both weak. The short - term driving force of short - fiber is weak, and it mainly follows the fluctuations of raw materials. For bottle - chips, the domestic supply will gradually increase in March, and the terminal demand is in the recovery stage, with weakening expectations. The absolute price of bottle - chips still follows the cost - side fluctuations, but the processing fee may decline. [17] 3. Summary According to Relevant Catalogs Polyolefin Industry - **Price Changes**: The closing prices of L2605, L2609, PP2605, and PP2609 showed different trends on March 5th compared to March 4th. The L59, PP59, and LP05 spreads also changed. Spot prices of East China PP拉丝 and North China LLDPE increased. [1] - **Inventory and Operating Rates**: PE enterprise inventory decreased, while social inventory increased. PP inventory decreased. PE and PP device operating rates decreased, while PE and PP downstream weighted operating rates increased. [1] Methanol Industry - **Price Changes**: The closing prices of MA2605 and MA2609 decreased, and the MA59 spread decreased significantly. The Taicang basis decreased, and the MTO05 disk increased. Spot prices in different regions showed different trends. [3] - **Inventory and Operating Rates**: Methanol enterprise inventory increased, while port inventory decreased slightly, and social inventory increased. The upstream domestic enterprise operating rate decreased, the upstream overseas enterprise operating rate increased, the Northwest enterprise production - sales rate decreased, and the downstream MTO device operating rate remained unchanged, while the formaldehyde and glacial acetic acid operating rates increased. [3] Crude Oil Industry - **Price Changes**: Brent, WTI, and SC prices increased significantly on March 5th compared to March 4th. The spreads between different contracts and different varieties also changed. The prices of refined oil products and their spreads also showed different trends. [5] - **Outlook**: Close attention should be paid to the appointment of Iran's new supreme leader, the safety of Middle East energy facilities, and the shipping situation in the Strait of Hormuz. [5] Urea Industry - **Price and Inventory Changes**: Urea futures declined after reaching a high, and spot prices were weak. The domestic urea daily production and weekly production increased, the device maintenance loss decreased, the factory inventory decreased, and the port inventory increased. The production enterprise order days increased. [8] - **Outlook**: In the short term, urea prices are expected to continue to trade in a high - level consolidation range, and attention should be paid to downstream demand progress and inventory accumulation. [8] PVC and Caustic Soda Industry - **Price and Inventory Changes**: The prices of PVC and caustic soda futures and spot showed different trends. The export profits of caustic soda and PVC decreased. The caustic soda industry operating rate increased slightly, the PVC total operating rate remained unchanged, and the inventory of caustic soda factories increased, while the inventory of PVC upstream factories and total social inventory decreased slightly. [9] - **Outlook**: For caustic soda, short - term market increases are mainly due to optimistic expectations brought by geopolitical conflicts, and caution should be exercised regarding the decline of the disk after the easing of the situation. For PVC, the supply - demand is in a stalemate, and prices may be passively pushed up due to concerns about the cost side. [9] Glass and Soda Ash Industry - **Price and Inventory Changes**: The prices of glass and soda ash futures increased. The supply of soda ash increased slightly, and the inventory of soda ash factories increased. The supply of glass was at a low level, and the inventory of glass production enterprises continued to accumulate. [10] - **Outlook**: For soda ash, it is recommended to wait and see due to the high risk of short - selling on rebounds. For glass, it is recommended to short on rebounds or wait and see, and attention should be paid to macro - policies and inventory changes. [10] Natural Rubber Industry - **Price and Inventory Changes**: The spot price of Yunnan state - owned whole latex remained unchanged, and the basis increased significantly. The prices of Thai standard mixed rubber and international cup rubber and glue showed different trends. The inventory of bonded areas increased, and the futures inventory of the Shanghai Futures Exchange decreased slightly. [11] - **Outlook**: In the short term, rubber prices are expected to oscillate due to the combination of supply and demand factors and geopolitical influences. [11] LPG Industry - **Price and Inventory Changes**: The prices of LPG futures contracts decreased, and the basis increased significantly. The LPG refinery inventory ratio and port inventory increased. The upstream main refinery operating rate remained unchanged, the sample enterprise weekly production - sales rate decreased slightly, the downstream PDH operating rate decreased, and the MTBE and alkylation operating rates remained stable. [13] Pure Benzene - Styrene Industry - **Price and Inventory Changes**: The prices of pure benzene and styrene upstream raw materials and downstream products increased. The inventory of pure benzene in Jiangsu ports decreased slightly, and the inventory of styrene in Jiangsu ports increased. The operating rates of different links in the industrial chain showed different trends. [16] - **Outlook**: For pure benzene, pay attention to the risk of price drops after reaching a high, and roll low - buying. For styrene, it is expected to be strong in the short term, and also pay attention to the risk of price drops after reaching a high and roll low - buying. [16] Polyester Industry Chain - **Price and Inventory Changes**: The prices of upstream raw materials and downstream polyester products increased. The inventory of MEG ports decreased slightly, and the expected arrival volume decreased. The operating rates of different links in the polyester industrial chain increased. [17] - **Outlook**: For PX, it is expected to be strong in the short term. For PTA, its absolute price follows the cost - side fluctuations. For ethylene glycol, it is expected to have a slight destocking in March. For short - fiber, it mainly follows the fluctuations of raw materials. For bottle - chips, the supply will increase in March, and the processing fee may decline. [17]

Group 1: Report Industry Investment Rating - No information provided in the content Group 2: Report Core Views Polyolefin Industry - Market short - covering sentiment cooled, spot trading worsened. For PE, HD - LLDPE spread narrowed, with increased marginal supply of LLDPE and weakening downstream demand in the off - season. For PP, supply and demand were both weak, with more maintenance, expected destocking in January, and improved balance. Pay attention to the implementation of future maintenance [2]. Methanol Industry - Methanol futures opened lower and then fluctuated narrowly, with light spot trading. Inland prices are expected to fluctuate, while port prices are under pressure due to factors such as low MTO profits and potential device maintenance [5]. Pure Benzene and Styrene Industry - Pure benzene has a weak short - term supply - demand pattern but is supported by the strong performance of downstream styrene. Styrene has short - term supply shortages but may accumulate inventory around the Spring Festival [8]. Natural Rubber Industry - Supply: Domestic production is ending, and raw material prices are rising. Demand: Some semi - steel tire export orders are increasing, and inventory is accumulating. The price is expected to fluctuate in the range of 15,500 - 16,500 [9][10]. Glass and Soda Ash Industry - Soda ash futures are expected to fluctuate weakly in the short term, with high inventory and weak downstream demand. Glass futures are also expected to decline, with weakening supply and demand in the off - season [11]. Urea Industry - Urea supply is high, but short - term regional agricultural demand boosts market confidence. Prices are expected to be strong in the short term, and attention should be paid to downstream agricultural demand and plant restart schedules [12]. PVC and Caustic Soda Industry - Caustic soda prices are expected to be weak, with increased supply and lack of demand improvement. PVC fundamentals are under pressure, with high supply, low demand, and inventory accumulation [13]. LPG Industry - No specific view provided in the content Crude Oil Industry - Oil prices fell on Thursday. Geopolitical risks have eased, and the supply - demand outlook is weak. Attention should be paid to geopolitical conflicts in the Middle East [17]. Polyester Industry Chain - PX is expected to fluctuate at a high level before the Spring Festival and may be tight in the second quarter. PTA and MEG are expected to have weak supply - demand in January and February. Short - fiber and bottle - chip prices are mainly driven by raw materials [19]. Group 3: Summary by Related Catalogs Polyolefin Industry - **Price Changes**: L2605 and L2609 closed down, PP2605 slightly up, PP2609 down. Some spreads and basis had significant changes [2]. - **Inventory and开工率**: PE and PP enterprise and social inventories decreased, while PE device and downstream weighted开工率 decreased, and PP device开工率 slightly increased [2]. Methanol Industry - **Price Changes**: MA2605 and MA2609 closed down, with significant changes in some spreads and basis [5]. - **Inventory and开工率**: Methanol enterprise inventory increased slightly, while port and social inventories decreased. Upstream and downstream开工率 had different changes [5]. Pure Benzene and Styrene Industry - **Price Changes**: Many prices such as crude oil, pure benzene, and styrene decreased, with some spreads and basis changing [8]. - **开工率 and Inventory**: Some开工率 increased, while some decreased. Pure benzene port inventory reached a record high, and styrene port inventory decreased [8]. Natural Rubber Industry - **Price Changes**: Spot prices of natural rubber decreased, and some spreads changed significantly [9]. - **Production,开工率, and Inventory**: Production in some regions changed, tire开工率 increased, and inventory in China continued to accumulate [9]. Glass and Soda Ash Industry - **Price Changes**: Glass and soda ash prices were mostly stable, with some futures prices down [11]. - **Supply, Demand, and Inventory**: Soda ash production increased, demand was weak, and inventory was high. Glass supply and demand were weak, and inventory was still relatively high year - on - year [11]. Urea Industry - **Price Changes**: Futures prices fluctuated down, and spot prices were stable with a slight upward trend [12]. - **Supply and Demand**: Supply was high, industrial demand was stable, and agricultural demand in some regions increased [12]. - **Inventory**: Factory and port inventories decreased [12]. PVC and Caustic Soda Industry - **Price Changes**: Caustic soda and PVC prices decreased slightly, with some spreads and basis changing [13]. - **Supply, Demand, and Inventory**: Caustic soda supply increased, demand was weak, and inventory increased in some regions. PVC supply was stable, demand was low, and inventory accumulated [13]. LPG Industry - **Price Changes**: Some futures prices changed slightly, and spot prices were stable [15]. - **Inventory and开工率**: LPG refinery and port inventories decreased slightly, and some开工率 increased while some decreased [15]. Crude Oil Industry - **Price Changes**: Brent and WTI prices decreased, while SC increased slightly. Many refined oil product prices decreased [17]. - **Spread Changes**: Some spreads such as Brent - WTI changed [17]. Polyester Industry Chain - **Price Changes**: Upstream and downstream product prices in the polyester industry chain mostly decreased, with changes in some spreads and basis [19]. - **开工率 and Inventory**: Some开工率 increased slightly while some decreased. MEG port inventory increased, and the arrival forecast decreased [19].

1. Report Industry Investment Rating No relevant information provided in the reports. 2. Core Views of the Reports Polyolefin Industry - LLDPE: Supply is expected to increase marginally, and demand enters the seasonal off - season with weakening downstream开工率. There is a positive feedback in the spot market, and the sustainability of demand should be monitored [1]. - PP: Both supply and demand are weak. There are many maintenance plans, and there is an expectation of inventory reduction in January. The balance has improved significantly, and attention should be paid to the implementation of maintenance plans [1]. Methanol Industry - The methanol futures are oscillating strongly. The inland price is expected to oscillate, and the port price is restricted by factors such as low MTO profits and potential maintenance of MTO devices [3]. Pure Benzene - Styrene Industry - Pure benzene: The short - term supply - demand pattern is weak, but it is driven by the strong performance of styrene and oil prices. The short - term trend is strong. It is recommended to wait and see for BZ2603 unilaterally and narrow the EB - BZ spread when it is high [5]. - Styrene: The short - term supply - demand is tight, but there is an expectation of inventory accumulation around the Spring Festival, and the upward space is limited. It is recommended to look for shorting opportunities for EB03 and narrow the EB processing fee when it is high [5]. Natural Rubber Industry - The rubber price is expected to oscillate in the range of 15,500 - 16,500. The raw material price provides support at the lower end, and the weak demand suppresses the upper end. Attention should be paid to the raw material output in Thailand [6]. Glass - Soda Ash Industry - Soda ash: The futures price is expected to oscillate weakly in the short term. Attention should be paid to the production load adjustment and inventory situation of soda ash plants [9]. - Glass: The price is expected to continue to weaken in the short term and can be treated bearishly [9]. Crude Oil Industry - The oil price is generally strong due to the instability in Iran, but the increase is limited by the weak supply - demand expectation. Attention should be paid to geopolitical conflicts such as the Russia - Ukraine peace talks and the Middle East situation [11]. LPG Industry No specific views provided in the report other than price and inventory data. Polyester Industry - PX: The short - term price is expected to oscillate at a high level before the Spring Festival, and the mid - term can be treated bullishly at low levels. It is recommended to do a long - short spread for PX5 - 9 at a low level [16]. - PTA: The short - term price is expected to oscillate between 5,000 - 5,300, and the mid - term can be treated bullishly at low levels. It is recommended to do a long - short spread for TA5 - 9 at a low level [16]. - MEG: The price is under pressure. It is recommended to pay attention to the pressure at around 4,000 for EG2605, do a short - long spread for EG5 - 9 at a high level, and sell out - of - the - money call options EG2605 - C - 4100 at a high level [16]. - Short fiber: The price is driven by raw materials in the short term. It is recommended to have the same strategy as PTA unilaterally and narrow the PF processing fee when it is high [16]. - Bottle chips: The price and processing fee are expected to follow the cost side. It is recommended to have the same strategy as PTA unilaterally [16]. PVC - Caustic Soda Industry - Caustic soda: The price is expected to be stable and weak. Attention should be paid to the procurement volume of the main downstream and the price fluctuation of liquid chlorine [18]. - PVC: The fundamentals are still under pressure, but the short - term price fluctuates emotionally. It is recommended to wait and see for short positions [18]. Urea Industry - The urea price is expected to be strong in the short term. Attention should be paid to the follow - up of downstream agricultural demand and the resumption rhythm of devices [19]. 3. Summaries According to Relevant Catalogs Polyolefin Industry - **Prices and Spreads**: Futures and spot prices of LLDPE and PP increased, and there were changes in various spreads such as L59, PP59, and LP05 [1]. - **Inventory**: PE enterprise inventory decreased by 11.41%, and PP trader inventory decreased by 5.28% [1]. - **开工率**: PE装置开工率 increased by 0.52%, and PP装置开工率 decreased by 1.65% [1]. Methanol Industry - **Prices and Spreads**: Methanol futures and spot prices increased, and there were changes in various spreads such as MA59 and regional spreads [3]. - **Inventory**: Methanol enterprise inventory increased by 0.73%, and port inventory decreased by 6.63% [3]. - **开工率**: The upstream domestic enterprise开工率 increased by 0.54%, and some downstream device开工率 decreased [3]. Pure Benzene - Styrene Industry - **Prices and Spreads**: The prices of pure benzene, styrene, and related products increased, and there were changes in various spreads such as EB - BZ [5]. - **Inventory**: The pure benzene port inventory reached a record high, and the styrene port inventory decreased significantly [5]. - **开工率**: The开工率 of some pure benzene and styrene downstream industries changed, with some increasing and some decreasing [5]. Natural Rubber Industry - **Prices and Spreads**: The spot price of natural rubber increased, and there were changes in various spreads such as the 9 - 1 spread [6]. - **Inventory**: The bonded area inventory increased by 3.62%, and the factory - warehouse futures inventory decreased by 1.74% [6]. - **Production and开工率**: The production in Thailand, Indonesia, and other countries decreased in November, and the开工率 of automobile tires changed [6]. Glass - Soda Ash Industry - **Prices and Spreads**: The spot prices of glass and soda ash were generally stable, and there were changes in futures prices and spreads [9]. - **Inventory**: The glass factory - warehouse inventory decreased by 5.69%, and the soda ash factory - warehouse inventory increased by 4.25% [9]. - **Supply and开工率**: The开工率 and supply of soda ash remained at a high level, and the glass melting volume and产能利用率 decreased slightly [9]. Crude Oil Industry - **Prices and Spreads**: The prices of Brent, WTI, and SC crude oil increased, and there were changes in various spreads such as Brent - WTI [11]. - **Refined Oil**: The prices of refined oil products such as NYM RBOB and NYM ULSD increased, and there were changes in cracking spreads [11]. LPG Industry - **Prices and Spreads**: The LPG futures prices changed slightly, and the spot price increased. There were changes in various spreads such as PG02 - 03 [14]. - **Inventory**: The LPG refinery storage capacity ratio decreased by 1.94%, and the port inventory decreased by 0.41% [14]. - **开工率**: The upstream main refinery开工率 increased by 2.49%, and the downstream PDH开工率 increased by 0.68% [14]. Polyester Industry - **Prices and Spreads**: The prices of PX, PTA, MEG, and polyester products changed, and there were changes in various spreads such as PX - naphtha [16]. - **Inventory**: The MEG port inventory increased [16]. - **开工率**: The开工率 of PX, PTA, and polyester products changed, with some increasing and some decreasing [16]. PVC - Caustic Soda Industry - **Prices and Spreads**: The prices of PVC and caustic soda decreased slightly, and there were changes in various spreads such as V2605 - V2601 [18]. - **Inventory**: The inventory of liquid caustic soda and PVC increased [18]. - **开工率**: The开工率 of the caustic soda and PVC industries changed, with some increasing and some decreasing [18]. Urea Industry - **Prices and Spreads**: The urea futures price increased, and the spot price was stable with a slight upward trend. There were changes in various spreads and basis [19]. - **Inventory**: The domestic urea factory - warehouse inventory decreased by 3.53%, and the port inventory remained unchanged [19]. - **Supply and Demand**: The daily and weekly production of urea increased, and the agricultural demand in some regions increased [19].

Group 1: Report Industry Investment Ratings - Not provided in the content Group 2: Core Views of the Report - The A - share index has rebounded continuously, with significant inflows into broad - based ETFs recently, and the downside space is limited. The RMB exchange rate has risen significantly, and core assets are expected to rise. The post - holiday market has a strong upward momentum, and it is recommended to hold bull spread portfolios and build covered call portfolios [3]. - The current abundant capital supports the bond market, but concerns about supply and the strengthening of equities restrain the performance of long - term bonds. Market consistency behavior may amplify fluctuations, and the stabilization or repair of long - term bonds will occur after the supply structure of government bonds becomes clearer [3]. - Geopolitical risks and tight supply continue to drive up the prices of non - ferrous metals and precious metals. Gold is expected to maintain high - volatility operation in January, and silver is recommended to be lightly long - held with low positions in high - volatility markets [3]. - Steel production is being cut and inventories are being reduced, and steel prices are expected to fluctuate within a range. In the iron ore market, more steel mills are resuming production, and attention should be paid to the impact of finished product export policies [3]. - Coal prices in Shanxi are running weakly, and coking coal and coke are viewed bearishly. The market sentiment for ferrosilicon has improved, and the price of manganese silicon is affected by ore support and supply - demand contradictions [3]. - Concerns about the stability of metal supply have intensified, driving up copper prices. Aluminum prices have reached new highs, but there are signs of over - rising in the short term. Zinc prices have moved up, and tin prices are oscillating strongly [3]. - The organic silicon industry is reducing production to support prices, and the polysilicon futures have fallen after rising. The lithium carbonate market has a strong sentiment, and supply disruptions are expected to intensify [3]. - The prices of PX and PTA are expected to oscillate at high levels, and short - fiber follows the raw material fluctuations. The supply and demand of bottle chips are both decreasing in January, and the processing fee has limited upward space [3]. - Ethanol is in a seasonal inventory - building period, and the price is under pressure. The supply - demand situation of benzene is slightly improving, but high inventories still put pressure on prices [3]. - The LLDPE market has strong orders, and the price of PP has strengthened slightly. The port price of methanol is strong, and the futures of caustic soda have rebounded strongly [3]. - The PVC market has a weak supply - demand pattern, and the urea market has improved after the Indian tender results were announced. The soda ash and glass markets have rebounded due to macro factors, and attention should be paid to the sustainability of production and sales [3]. - The prices of agricultural products such as soybeans, rapeseed meal, and corn are expected to oscillate. The prices of edible oils are oscillating within a range, and the prices of sugar are rebounding slightly [3]. - The egg supply is stable, and the apple market is driven by the shortage of high - quality fruits. The price of cotton is expected to oscillate strongly, and the price of red dates has stabilized [3]. Group 3: Summaries by Relevant Catalogs Daily Selected Views - Nickel (NI2602) is expected to fluctuate strongly; Methanol (MA2605) is expected to be strong in the short term; Iron ore (I2605) is recommended for short - term long - position attempts; Live pigs (LH2603) are expected to fluctuate strongly; Silver (AG2604) is expected to fluctuate strongly [3]. Full - Variety Daily Reviews Financial Sector - **Stock Index Futures**: The A - share index has rebounded, and the stock index has reached new highs. It is recommended to hold bull spread portfolios and build covered call portfolios. Core assets and technology - leading stocks represented by IH and IC are dominant [3]. - **Treasury Bond Futures**: The bond market is supported by abundant funds, but long - term bonds are restricted. It is recommended to wait and see in the short term, focus on cash - and - carry arbitrage, and steepen the yield curve [3]. - **Precious Metals**: Geopolitical risks and tight supply drive up prices. Gold should be held long above $4300, silver should be lightly long - held with low positions, and platinum and palladium should be long - held at low positions [3]. Commodity Sector - **Steel and Iron**: Steel prices are range - bound, iron ore is recommended for short - term long - positions, coking coal and coke are bearish, ferrosilicon is expected to fluctuate strongly, and manganese silicon is for range - bound operations [3]. - **Non - Ferrous Metals**: Copper prices are rising, aluminum prices are at new highs but not recommended to be chased, zinc prices are rising, tin prices are strongly oscillating, and nickel and stainless steel are recommended for long - positions at low prices [3]. - **New Energy and Chemicals**: Organic silicon and polysilicon futures have fallen after rising, lithium carbonate is recommended to wait and see, PX and PTA are for high - level oscillations and low - level long - positions, and short - fiber follows raw material fluctuations [3]. - **Energy and Chemicals**: LLDPE is recommended for short - term long - positions, PP should focus on PDH profit expansion, methanol is recommended for long - positions at low prices, and caustic soda is recommended to wait and see [3]. - **Agricultural Products**: Soybeans, rapeseed meal, and corn are expected to oscillate, edible oils are range - bound, sugar is slightly rebounding, cotton is expected to oscillate strongly, and red dates are recommended to sell out - of - the - money call options [3].

Group 1: Investment Ratings - No investment ratings provided in the reports Group 2: Core Views Polyolefins (LLDPE & PP) - The fundamentals of both LLDPE and PP show a pattern of increasing supply and weakening demand, with cost support and inventory pressure coexisting. Polypropylene has high maintenance levels on the supply - side with an expected increase later, and its inventory is still higher than usual. The overall valuation is moderately low. For polyethylene, the operating load is gradually rising, and the upstream inventory is still high year - on - year [1]. Methanol - The methanol futures fluctuated upwards, with the basis being relatively firm. In the port area, Iranian gas restrictions led to multiple device shutdowns, but shipments are still fast. In the inland area, both supply and demand are increasing. It is recommended to go long on the 05 contract at low prices after the shipment decreases [4][5]. PVC & Caustic Soda - For caustic soda, the supply - demand situation still has pressure, with high inventory levels. The price is expected to be weak. For PVC, the supply pressure remains this week, and the demand is sluggish. Although there are expectations of increased exports, the overall supply - demand is in an oversupply situation, and the price is not optimistic. It is recommended to go short on PVC after a rebound [8]. Glass & Soda Ash - For soda ash, the supply - demand situation is bearish, and the price is in a downward trend. After a technical rebound, short - term long positions can be closed, and short positions can be taken after a rebound. For glass, the spot price is stable, but the demand is weakening, and the price is expected to be under pressure, with the 01 contract following the delivery logic and the 05 contract remaining weak in the short - term [9]. Polyester Industry Chain - PX may fluctuate in the range of 6600 - 7000 in the short - term and should be treated with low - buying. PTA may fluctuate in the range of 4500 - 4800 in the short - term, and low - buying and TA5 - 9 low - level positive spreads are recommended. Ethylene glycol is expected to oscillate at a low level in the short - term, and it is recommended to sell EG2605 - C - 4100 to obtain time value. Short - fiber follows the raw material fluctuations, and the processing fee on the disk should be shorted when it is high. For polyester bottle - chips, it is recommended to sell PR2602 - P - 5500 [11]. Natural Rubber - The supply - side is supported by rising overseas raw material prices due to the tense situation between Thailand and Cambodia. The demand - side has limited improvement in production capacity utilization. The market is in a short - term stalemate between long and short forces, and the rubber price is expected to oscillate in the range of 15000 - 15500 [13]. Urea - Affected by the news of India's new round of tenders, the urea price stopped falling and rebounded. The supply is abundant, and the demand is weak. The price is expected to bottom - out and rebound in the short - term, fluctuating in the range of 1650 - 1700 [15]. Crude Oil - After a rebound, the crude oil price is affected by geopolitical factors such as the situation between the US and Venezuela and the US - Russia talks. The inventory shows a slight reduction, but the supply - demand pattern is still loose. Brent crude oil should be monitored at the level of 60 dollars per barrel [16]. Pure Benzene & Styrene - For pure benzene, the short - term supply - demand is weak, but there are expectations of improvement later. It is expected to oscillate in the range of 5300 - 5600. For styrene, the supply is increasing, the demand is weak, and it is expected to oscillate in the range of 6400 - 6700 in the short - term [19]. LPG - The LPG price shows certain fluctuations. The inventory and operating rates of upstream and downstream are changing. The overall market situation needs to be further observed [21]. Group 3: Summaries by Catalog Polyolefins - **Prices**: L2601 and L2605 of LLDPE decreased, while PP2601 slightly increased and PP2605 slightly decreased. The basis and spreads of various varieties also changed [1]. - **Inventory**: PE enterprise inventory increased, and social inventory decreased. PP enterprise inventory slightly increased, and trader inventory decreased [1]. - **Operating Rates**: PE device operating rate was stable, and downstream weighted operating rate decreased. PP device operating rate increased, and powder operating rate decreased [1]. Methanol - **Prices**: Methanol futures prices increased, and the basis was relatively firm. Spot prices in different regions had different changes [4]. - **Inventory**: Enterprise inventory increased, port inventory decreased, and social inventory increased [4]. - **Operating Rates**: Upstream domestic and overseas enterprise operating rates increased slightly, and some downstream operating rates also changed [5]. PVC & Caustic Soda - **PVC**: - **Prices**: Futures and spot prices of PVC increased. The basis and spreads had corresponding changes [8]. - **Supply - Demand**: Supply pressure remained, and demand was sluggish. There were expectations of increased exports [8]. - **Caustic Soda**: - **Prices**: Prices in different regions and forms had different trends. The export profit increased slightly [8]. - **Supply - Demand**: Supply - demand pressure remained, with high inventory levels [8]. Glass & Soda Ash - **Glass**: - **Prices**: Spot prices in different regions were stable, and futures prices had minor changes [9]. - **Inventory**: Factory inventory decreased [9]. - **Soda Ash**: - **Prices**: Spot and futures prices had small fluctuations [9]. - **Supply - Demand**: Supply - demand was bearish, with reduced demand from the float and photovoltaic ends [9]. Polyester Industry Chain - **Prices**: Upstream raw material prices such as crude oil and naphtha, and downstream polyester product prices all had different degrees of change [11]. - **Inventory**: MEG port inventory was expected to increase [11]. - **Operating Rates**: Operating rates of various links in the polyester industry chain, such as PX, PTA, and MEG, changed [11]. Natural Rubber - **Prices**: Spot prices of natural rubber increased, and the basis and spreads changed [13]. - **Inventory**: Bonded area inventory and factory - warehouse futures inventory increased [13]. - **Supply - Demand**: Supply was affected by the overseas situation, and demand was limited by the slow recovery of tire production and the weakening of replacement demand [13]. Urea - **Prices**: Futures prices increased, and spot prices in different regions had different trends [15]. - **Inventory**: Factory inventory decreased [15]. - **Supply - Demand**: Supply was abundant, and demand was affected by environmental inspections and the limited impact of India's tenders [15]. Crude Oil - **Prices**: Brent, WTI, and SC crude oil prices had different trends, and the spreads between different varieties and months also changed [16]. - **Inventory**: EIA inventory decreased slightly [16]. Pure Benzene & Styrene - **Prices**: Pure benzene and styrene spot and futures prices decreased, and the spreads and cash - flows had corresponding changes [19]. - **Inventory**: Pure benzene port inventory was stable, and styrene port inventory decreased [19]. - **Operating Rates**: Operating rates of pure benzene and styrene and their downstream industries decreased [19]. LPG - **Prices**: Futures prices of LPG had different trends, and the basis and spreads changed [21]. - **Inventory**: Refinery inventory ratio and port inventory increased [21]. - **Operating Rates**: Upstream refinery operating rate increased, and some downstream operating rates also changed [21].

Group 1: Report Information - The reports cover multiple industries including polyolefin, methanol, crude oil, natural rubber, urea, benzene - styrene, glass - soda ash, PVC - caustic soda, and polyester产业链 on December 3, 2025 [1][5][9][10][12][13][14][15][16] Group 2: Industry Price and Spread Changes Polyolefin - Futures prices of L2601, L2605, PP2601, and PP2605 increased on December 2 compared to December 1, with L2601 rising 0.41% to 6831 yuan/ton and PP2601 rising 0.20% to 6410 yuan/ton [2] - Price differences such as L15, LP01, etc. also had corresponding changes, with L15 rising 8.33% [2] Methanol - MA2601 decreased 0.19% to 2132 yuan/ton on December 2 compared to December 1, while MA2605 remained unchanged [5] - Methanol enterprise inventory increased 4.19% to 37.3712%, and methanol port inventory decreased 7.83% to 136.4 million tons [5] Crude Oil - Brent decreased 1.14% to 62.45 dollars/barrel, and WTI decreased 1.15% to 58.64 dollars/barrel on December 2 compared to December 1 [9] Natural Rubber - Yunnan state - owned whole latex (SCRWF) in Shanghai increased 0.34% to 14850 yuan/ton on December 2 compared to December 1 [10] - The basis of whole latex decreased 13.33% to - 510 yuan/ton [10] Urea - Futures prices of different contracts had slight increases or decreases, with the 01 contract increasing 0.72% to 1687 yuan/ton [12] - The difference between the 01 and 05 contracts changed, with an increase of 4 in the difference [12] Benzene - Styrene - Brent crude oil (January) decreased 1.1% to 62.45 dollars/barrel on December 2 compared to December 1, and styrene in East China increased 0.9% to 6680 yuan/ton [13] Glass - Soda Ash - Glass in North China decreased 0.92% to 1080 yuan/ton, and soda ash in North China remained unchanged at 1300 yuan/ton [14] PVC - Caustic Soda - East China calcium carbide - based PVC increased 0.4% to 4510 yuan/ton on December 2 compared to December 1 [15] Polyester Industry Chain - Brent crude oil (February) decreased 1.1% to 62.45 dollars/barrel, and POY150/48 price increased 0.4% to 6485 yuan/ton on December 2 compared to December 1 [16] Group 3: Industry Supply and Demand and Inventory Polyolefin - Polypropylene supply maintenance due to high - level overhauls is expected to recover, and inventory reduction is accelerating but still higher than previous years; polyethylene supply is increasing, and although upstream inventory is decreasing, it is still higher year - on - year [2] Methanol - Inland methanol supply increased with device restarts, and coal - and gas - based profits were weak; port imports are expected to decline significantly in Q1 due to Iranian gas restrictions [5][6] Crude Oil - Under the pressure of OPEC+ continuous production increase and the record - high US crude oil production, the crude oil supply - demand pattern is weak, and inventories of crude oil and refined oil increased according to API data [9] Natural Rubber - Supply is expected to increase during the seasonal peak production period, and inventory is accumulating, while demand from semi - steel and full - steel tire markets is weak [10] Urea - Domestic urea daily production increased 1.19% to 20.34 million tons on November 27 compared to November 28, and urea plant inventory decreased 5.10% to 136.39 million tons [12] Benzene - Styrene - Pure benzene supply is sufficient with device restarts and expected imports, and demand support is limited; styrene supply is expected to be stable, and demand support is also limited, but the inventory accumulation expectation is not obvious in December [13] Glass - Soda Ash - Soda ash production decreased due to device overhauls but recently recovered, and glass factory inventory decreased slightly; real - estate data shows mixed trends with new construction area decreasing and completion area increasing [14] PVC - Caustic Soda - Caustic soda supply is abundant, and demand support is weak; PVC supply pressure remains, and demand is in the off - season, but export orders are relatively good [15] Polyester Industry Chain - PX supply is expected to be better in the medium - term, and PTA supply decreased more than expected, while demand support is stronger than expected; MEG inventory accumulation in December is expected to narrow, but supply pressure remains [16] Group 4: Industry Core Views and Strategies Polyolefin - The fundamentals show a pattern of increasing supply and weak demand, with cost support and inventory pressure coexisting [2] Methanol - Inland supply increases, and port imports are expected to decline, with winter fuel demand providing support [6] Crude Oil - International oil prices are expected to continue range - bound, with Brent likely to fluctuate between 60 - 65 dollars/barrel in the short - term [9] Natural Rubber - The market is expected to maintain range - bound consolidation, with rubber prices expected to operate between 15000 - 15500 yuan/ton [10] Urea - No specific overall view and strategy are clearly stated in the provided text [12] Benzene - Styrene - For pure benzene, short - term BZ2603 is recommended to be short on rebounds; for styrene, short - term EB01 is recommended to be treated as wide - range fluctuations [13] Glass - Soda Ash - Soda ash is expected to be in a bottom - range fluctuation, and glass is expected to face pressure in the medium - and long - term, with the 01 contract having pressure in December [14] PVC - Caustic Soda - Caustic soda prices are expected to be weak, and PVC is expected to continue the bottom - weakening pattern [15] Polyester Industry Chain - PX is recommended to pay attention to the pressure around 7000 yuan/ton in the short - term; PTA is expected to be in a high - level range - bound in the short - term; MEG is expected to be in a range - bound in December; short - fiber follows raw material fluctuations, and processing fees are recommended to be shorted on highs; bottle - chip processing fees are expected to be squeezed [16]

1. Report Industry Investment Ratings No investment ratings were provided in the reports. 2. Core Views Polyolefins - The fundamentals of LLDPE and PP show a pattern of increasing supply and weak demand, with both cost support and inventory pressure coexisting [2]. Methanol - The supply of inland methanol increases with the restart of devices, but the profits of coal - and gas - based production are weak. The traditional downstream demand has a slight increase, and the winter fuel demand provides support. In ports, the reduction of imports due to Iranian gas restrictions strengthens the de - stocking expectation and supports prices [6]. Natural Rubber - The supply is expected to increase seasonally, and the inventory continues to accumulate. The terminal demand improvement is weak. The market is expected to fluctuate within the range of 15000 - 15500 [9]. Crude Oil - Geopolitical risks support oil prices in the short term, but the continuous increase in OPEC+ production and the record - high US crude oil production put pressure on the supply - demand pattern. Oil prices are expected to fluctuate within a range, with Brent crude oil likely to trade between 60 - 65 dollars per barrel [11]. Polyester Industry Chain - PX: The medium - term supply - demand expectation is good, but the short - term valuation drive is limited. - PTA: The supply - demand is expected to tighten in December but be relatively loose in Q1. The absolute price is relatively firm in the short term, but the rebound space is limited. - Ethylene glycol: It is expected to fluctuate within a range in December. - Short - fiber: The short - term price support is strong, but the absolute price drive is limited, and the processing fee is likely to be compressed. - Bottle - chip: The supply - demand is in a loose pattern, and the processing fee is expected to be squeezed [14]. Pure Benzene and Styrene - Pure benzene: The supply - demand is expected to be weak, and the price is under upward pressure. - Styrene: The supply - demand is in a tight - balance state, but the upward drive is insufficient [15]. Glass and Soda Ash - Soda ash: The supply - demand pattern is still bearish, and it is expected to fluctuate at the bottom. - Glass: The short - term spot market is strong, but the 01 contract may face pressure later [16]. PVC and Caustic Soda - Caustic soda: The demand is weak, and the price is expected to run weakly. - PVC: The supply - demand is in an oversupply pattern, and the price is expected to continue the bottom - range fluctuation [17]. LPG No overall view was provided in the LPG report, but price, inventory, and开工率 data were presented [18]. 3. Summaries by Related Catalogs Polyolefins - **Prices**: L2601, L2605, PP2601, and PP2605 had different price changes on December 1st compared to November 28th. Spot prices of some products also changed, with the price of华东PP拉丝现货 increasing by 0.32% and华北LLDPE现货 increasing by 0.30% [2]. - **Inventory**: PE and PP inventories decreased, with PE企业库存 decreasing by 9.80% and PP企业库存 decreasing by 8.00% [2]. - **开工率**: PE装置开工率 increased by 2.17%, while PP装置开工率 decreased by 0.18% [2]. Methanol - **Prices**: MA2601 and MA2605 prices changed slightly on December 1st compared to November 28th. Spot prices of some regions also had minor changes [5]. - **Inventory**: Methanol企业库存 increased by 4.19%, while甲醇港口库存 decreased by 7.83% [5]. - **开工率**: Some upstream and downstream开工率 of methanol changed, with the上游 - domestic企业开工率 decreasing by 0.67% and the下游 -外采MTO装置开工率 decreasing by 0.78% [6]. Natural Rubber - **Prices**: The price of云南国营全乳胶(SCRWF) in Shanghai decreased by 1.33%, and the price of泰标混合胶 increased by 0.34% [9]. - **Production and Consumption**: The production of some countries in September changed, with Thailand's production decreasing by 5.45%. The domestic tire production and export in October decreased [9]. - **Inventory**: The保税区库存 increased by 2.74% [9]. Crude Oil - **Prices**: Brent, WTI, and SC prices all increased on December 1st compared to November 28th [11]. - **Spreads**: Some price spreads such as Brent M1 - M3 and WTI M1 - M3 changed [11]. - **Refined Oil**: The prices and spreads of refined oil products also had different changes [11]. Polyester Industry Chain - **Prices**: Upstream prices such as Brent crude oil and CFR日本石脑油 changed. Downstream polyester product prices also had various changes, with POY150/48价格 decreasing by 0.1% [14]. - **Spreads**: PX - related spreads and PTA - related spreads changed, such as PX -原油 increasing by 1.9% [14]. - **开工率**: The开工率 of various links in the polyester industry chain changed, with the亚洲PX开工率 decreasing by 1.3% [14]. Pure Benzene and Styrene - **Prices**: Pure benzene and styrene prices changed, with纯苯华东现货 decreasing by 0.6% and苯乙烯华东现货 decreasing by 0.2% [15]. - **Spreads**: Related spreads such as EB - BZ现货价差 increased by 1.6% [15]. - **Inventory and开工率**: Pure benzene and styrene inventories and开工率 changed, with纯苯江苏港口库存 increasing by 36.6% and苯乙烯开工率 decreasing by 2.4% [15]. Glass and Soda Ash - **Prices**: Glass and soda ash prices in different regions and futures prices changed, with the华东报价 of glass increasing by 0.84% and the纯碱2605 increasing by 0.68% [16]. - **Supply and Demand**: The开工率 and production of soda ash decreased, and the浮法日熔量 and光伏日熔量 also decreased [16]. - **Inventory**: Glass and soda ash inventories decreased, with the玻璃厂库 decreasing by 1.49% and the纯碱厂库 decreasing by 3.47% [16]. PVC and Caustic Soda - **Prices**: The prices of PVC and caustic soda changed, with山东32%液碱折自价 decreasing by 2.7% [17]. - **Supply and Demand**: The开工率 of the chlor - alkali industry and downstream industries changed, with the烧碱行业开工率 decreasing by 0.7% [17]. - **Inventory**: The inventories of PVC and caustic soda changed, with the液碱华东厂库库存 increasing by 6.0% [17]. LPG - **Prices**: LPG futures and spot prices changed, with the主力 PG2601 decreasing by 1.59% and the华南现货(民用气) increasing by 1.81% [18]. - **Inventory**: LPG inventories decreased, with theLPG炼厂库容比 decreasing by 7.70% [18]. - **开工率**: The开工率 of upstream and downstream industries changed, with the上游 -主营炼厂开工率 decreasing by 1.26% [18].

1. Report Industry Investment Ratings - No industry investment ratings are provided in the reports. 2. Core Views of the Reports Polyolefins - PP shows a pattern of both supply and demand growth, with reduced maintenance leading to increased supply and a slight accumulation of inventory under the pressure of new production capacity. PE shows increased supply and decreased demand. Although unplanned maintenance eases some supply pressure, imported goods are abundant, and demand is generally weak except for agricultural films. The inventory of hedging merchants is gradually decreasing, the basis is strengthening, and inventory is being cleared. When the price is below 6800, the downstream's willingness to buy increases. The cost side is affected by the shock of crude oil and the strength of coal, and the PDH profit has continued to weaken this week. [2] Methanol - In the domestic market, Baofeng continues to purchase externally, and Jiutai has an unexpected maintenance. The domestic production will continue to increase. Currently, the marginal devices in the domestic market have suffered losses. In the port market, the gas restriction in Iran has been postponed, and the shipment has accelerated. As of November 19, Iran has shipped 885,000 tons, putting significant pressure on the port methanol market. With high inventory and the profit of imported methanol from Iran, the willingness to hold goods has weakened, and the price has declined while the basis remains stable. The demand side is based on rigid procurement. The market is currently trading on the logic of "weak reality", and the core contradiction lies in the high inventory in the port. The inventory contradiction of the 01 contract cannot be resolved, and the weak reality will continue to be traded before the gas restriction in Iran. [4] Glass and Soda Ash - Soda ash: The market has returned to a weak state, and the overall pattern of oversupply is still prominent. Fundamentally, the weekly production remains at a high level of around 750,000 tons, and the oversupply is obvious compared with the current rigid demand. The inventory of manufacturers has been transferred to the middle and lower reaches, and the trade inventory has continued to rise. In the medium term, there is no expectation of a significant increase in downstream production capacity, so the overall demand for soda ash will continue the previous rigid demand pattern. If there is no actual production capacity exit or load reduction in the future, the supply - demand situation will be further pressured. - Glass: The spot sales have strengthened, and the high sales rate in some regions has continued to be above 100%. Consecutive price cuts have driven the middle and lower reaches to purchase. Although 4 production lines in the Shahe area were cold - repaired last week, there will be production lines restarting and igniting in the future, which will put pressure on the supply side. The latest deep - processing order days have improved slightly, and there is still some rigid demand support in the short term as November is the peak season for year - end rush work. However, in the medium and long term, at the end of the peak season, the market is worried about the sustainability of future demand. As the temperature in the north drops, outdoor construction will gradually stop, and the demand side will shrink after December, putting pressure on the glass price. The real estate is still in the bottom cycle, and the completion volume has decreased significantly. Therefore, in the oversupply pattern, the glass industry still needs to clear production capacity to solve the oversupply dilemma. [7] PVC and Caustic Soda - Caustic soda: The supply - demand situation of the caustic soda industry still faces certain pressure. The purchasing enthusiasm of the main downstream alumina has decreased, so the support from the main demand side of caustic soda is weak, which suppresses the caustic soda price upwards. During the northern environmental protection control period, some alumina plants may have production reduction expectations. There is an overhaul expectation in the East China region, and the supply will decrease slightly. The price in this region may be relatively stable due to certain rigid demand support, but in the long term, the supply - demand still has pressure. The non - aluminum market is still sluggish, and overall, the supply - demand pressure is still relatively large. It is expected that the caustic soda price will fluctuate weakly. - PVC: The PVC spot market continues to fluctuate weakly. This week, maintenance and partial device load reduction have led to a decrease in production on a month - on - month basis, but it is still at a high level. Affected by local logistics, the market arrivals have decreased, and the social inventory has decreased on a month - on - month basis. Next week, the supply - side operating rate will increase. The demand side is in the traditional off - season from November to January of the next year. As the outdoor construction in the north gradually decreases in winter, the overall real estate demand reduction still has a negative impact. In terms of exports, India has officially cancelled the BIS certification for imported PVC issued in 2024, which is beneficial for domestic PVC to enter the Indian market. However, there is an expectation of anti - dumping duties, and the Asian contract price for December is still to be observed next week. It is expected that the external demand will be difficult to increase. The overall demand side has limited support for PVC. The supply - demand is still in an oversupply pattern, and it is difficult for the price to form an upward drive. It is expected to continue the weak pattern at the bottom. [8] Natural Rubber - The supply side: Yunnan has encountered cold weather, which has accelerated the end of the tapping season in Yunnan. The rainy season in southern Thailand continues, and the price of overseas raw materials is high, which strongly supports the rubber price. The demand side: Currently, the overall demand is weak. Channels are cautious in purchasing and mainly focus on digesting inventory. Next week, the purchasing enthusiasm of some agents on an as - needed basis may increase slightly, which will drive the overall sales volume. However, the overall demand is weakening, and the actual increase in purchasing volume is limited. The market still mainly focuses on digesting inventory. In conclusion, the natural rubber inventory has entered the seasonal inventory accumulation period, and the terminal demand support is insufficient. There is an expectation that the operating rate of downstream enterprises will further decline. It is expected that the natural rubber market will enter a range - bound consolidation. In the future, attention should be paid to the raw material output in the peak production season of the main producing areas and macro - level changes. If the raw material supply is smooth, the rubber price is expected to decline. If the raw material supply is not smooth, the rubber price is expected to operate in the range of 15,000 - 15,500. [9] Pure Benzene and Styrene - Pure benzene: Recently, many sets of pure benzene devices have overhaul expectations, but the import expectation remains high, and the overall supply may still be relatively loose. On the demand side, the load of downstream styrene has increased due to the restart of some devices, but some loss - making varieties have reduced production to maintain prices, and the domestic demand side has limited support. The port inventory has increased, and there are still many arrivals in the future, so the supply pressure of pure benzene is relatively large. After the overhaul of the disproportionation device in the US Gulf ends, the support from blending oil may weaken, but South Korea's aromatics have an export expectation to the US, and the US dollar price of pure benzene has increased. Overall, the supply - demand expectation of pure benzene is still relatively loose, and the limited support from the cost side may limit the upward space. It may fluctuate and consolidate. However, since the current valuation of pure benzene is low, future attention should be paid to device changes. In the short term, it is advisable to wait and see for BZ2603. - Styrene: After the overhaul of the disproportionation device in the US Gulf ends, the blending oil demand may weaken. However, in November, the supply - demand situation of styrene has further improved. With the South Korean mixed aromatics trading, styrene has an export transaction expectation, and the port inventory has decreased. There are positive factors supporting styrene, and it will mainly fluctuate and repair in the short term. However, as the profit of styrene is repaired, the overhaul of some factories may be delayed. Coupled with the trial operation of new devices and the expected weakening of downstream EPS demand, it is expected that the upward space of styrene will be limited. In the short term, the price of EB01 may mainly fluctuate and consolidate. [10] Polyester Industry Chain - PX: Recently, the operating loads of Asian and domestic PX have decreased. However, the supply of Asian MX is abundant, and some factories rely on MX to supplement PX production, so the PX supply still remains at a relatively high level. On the demand side, the PTA price still has certain support this week. However, the spot floating price and monthly spread of PX are still weak, and the overall support from oil prices is limited. It is expected that the rebound space of PX is limited. Strategically, PX should be regarded as a short - term high - level shock. - PTA: As two PTA devices in East China are gradually under maintenance, the basis has slightly strengthened. According to the balance sheet, the supply - demand of PTA is in a tight balance in November, but the supply - demand of PTA is expected to be relatively loose from December to the first quarter of next year, and the upward drive of the basis is limited. In terms of absolute price, recently, the absolute price of PTA is relatively strong due to the support of blending oil demand and India's cancellation of BIS certification. However, the overall support from oil prices is limited, and the rebound space of PTA is still limited. Strategically, TA should be regarded as a short - term high - level shock, and TA1 - 5 should be treated as a rolling reverse spread. - Ethylene glycol: The operating load of ethylene glycol is at a high level. The arrival of overseas ethylene glycol shipments is relatively concentrated in November, and the port inventory will continue to increase recently, and the basis will weaken. In addition, the inventory accumulation amplitude of ethylene glycol from November to December is expected to be relatively high, and the upward pressure on ethylene glycol is significant. Strategically, the seller of the out - of - the - money call option with an exercise price of no less than 4100 for EG2601 should hold, and EG1 - 5 should be reversely spread at high levels. - Short - fiber: Although the spot processing margin of short - fiber has been significantly compressed recently, there is still profit at present, and the inventory pressure of short - fiber factories is not large, so the short - fiber supply remains at a high level. On the demand side, the terminal demand has seasonally weakened in November. In addition, the cancellation of India's BIS certification has certain benefits for PTA and filament, but has relatively little impact on short - fiber. Therefore, under the short - term weak supply - demand expectation and cost - side support, it is expected that the absolute price of short - fiber will be under pressure, and the processing margin still has room for compression. Strategically, the unilateral strategy is the same as that of PTA; the processing margin on the disk should be shorted at high levels. - Bottle - grade polyester: In mid - November, the Huarun device has both maintenance and restart. In addition, according to Longzhong Information, the commissioning of the new device of Dongying Fuhai has been postponed, and the domestic supply has not changed much. Considering that November is in the off - season of demand and the window period between the Spring Festival stocking, the demand side has insufficient support for bottle - grade polyester. The supply - demand of bottle - grade polyester remains in a loose pattern. Therefore, the social inventory of bottle - grade polyester will probably enter the seasonal inventory accumulation channel, and PR will mainly fluctuate with the cost side. The processing margin of PR is limitedly boosted by supply - demand and will change dynamically with the raw material cost. Strategically, the unilateral strategy of PR is the same as that of PTA; the processing margin of the main contract of PR is expected to fluctuate in the range of 300 - 450 yuan/ton. [12] Crude Oil - Overnight, affected by the news that Russia and Ukraine may restart peace talks, the geopolitical premium has declined, and the oil price has declined under pressure. However, EIA data shows that the US crude oil inventory has decreased more than expected, and the decline of the oil price has been slightly narrowed. Recently, attacks or sanctions caused by the Russia - Ukraine issue have had a short - term impact on the oil price. However, under the pressure of continuous production increase by OPEC+ and the record - high US crude oil production, the supply - demand pattern of crude oil is still weak, and the upward pressure on the oil price is significant. In the short term, attention should be paid to the support of Brent crude oil at $60 per barrel and the geopolitical dynamics between Russia and Ukraine. [14] 3. Summary According to Relevant Catalogs Polyolefins - **Price and Spread**: The closing prices of L2601, L2605, PP2601, and PP2605 have all increased, and the L15 and PP15 spreads have also increased. The spot prices of East China PP raffia and North China LLDPE have increased, while the North China LL basis has decreased significantly, and the East China pp basis has remained unchanged. The prices of some PE and PP non - standard products have remained unchanged, while the prices of some have decreased. - **Inventory**: PE enterprise inventory and social inventory have decreased, while PP enterprise inventory has increased, and PP trader inventory has decreased. - **Operating Rate**: The operating rate of PE devices has increased slightly, while the weighted operating rate of PE downstream has decreased slightly. The operating rate of PP devices and powder devices has increased, and the weighted operating rate of PP downstream has increased slightly. [2] Methanol - **Price and Spread**: The closing prices of MA2601 and MA2605 have decreased, and the MA15 spread has increased. The basis of Taicang has remained unchanged. The spot prices of Inner Mongolia North Line and Henan Luoyang have increased, while the spot price of Taicang Port has decreased. The regional spreads have changed significantly. - **Inventory**: Methanol enterprise inventory, port inventory, and social inventory have all decreased. - **Operating Rate**: The operating rates of domestic and overseas upstream enterprises have increased, the production - sales rate of Northwest enterprises has increased, the operating rate of downstream external - procurement MTO devices has decreased, the operating rate of downstream formaldehyde has increased slightly, the operating rate of downstream acetic acid has decreased significantly, and the operating rate of downstream MTBE has increased. [4] Glass and Soda Ash - **Price and Spread**: The prices of glass in North China have remained unchanged, while the prices in East China, Central China, and South China have decreased. The closing prices of glass 2601 have decreased, and the closing price of glass 2605 has remained unchanged. The 01 basis has increased. The prices of soda ash in North China, East China, Central China, and Northwest have remained unchanged. The closing prices of soda ash 2601 and 2605 have decreased, and the 01 basis has increased significantly. - **Supply**: The operating rate and weekly output of soda ash have decreased slightly, the daily melting volume of float glass has remained unchanged, the daily melting volume of photovoltaic glass has decreased, and the price of 3.2mm coated glass has decreased. - **Inventory**: The inventory of glass factories has increased, the inventory of soda ash factories has increased, the inventory of soda ash delivery warehouses has decreased, and the inventory days of soda ash in glass factories have remained unchanged. - **Real Estate Data**: The new construction area, construction area, completion area, and sales area have all decreased compared with the previous period. [7] PVC and Caustic Soda - **Price and Spread**: The prices of Shandong 32% liquid caustic soda and 50% liquid caustic soda have remained unchanged. The market prices of East China calcium - carbide - based PVC and East China ethylene - based PVC have decreased. The prices of SHSEOS, SH2601, V2605, and V2601 have decreased, and the V basis has increased significantly. - **Export and Profit**: The overseas quotes and export profits of caustic soda and PVC have some data unavailable, and some data have changed. - **Supply and Profit**: The operating rate of the caustic soda industry and the sample operating rate in Shandong have decreased slightly, the operating rate of PVC has decreased, the profit of externally - purchased calcium - carbide - based PVC has remained unchanged, and the profit of Northwest integrated PVC has decreased. - **Demand**: The operating rates of some downstream industries of caustic soda and PVC have increased or decreased. The pre - sales volume of PVC has decreased. - **Inventory**: The factory - warehouse inventory of liquid caustic soda in East China and Shandong has decreased, the upstream factory - warehouse inventory of PVC has decreased, and the total social inventory of PVC has decreased. [8] Natural Rubber - **Price and Spread**: The price of Yunnan state - owned full - latex has increased, the full - latex basis has decreased, the price of Thai standard mixed rubber has decreased, the non - standard price difference has decreased significantly, and the prices of some raw materials have remained unchanged. The 9 - 1 spread has remained unchanged, the 1 - 5 spread has increased, and the 5 - 9 spread has decreased. - **Production and Consumption**: The production of Thailand, Indonesia, and China in September has changed, the production of India has increased. The operating rates of semi - steel and full - steel tires have changed slightly, the domestic tire production in October has decreased, the tire export volume in October has decreased, the import volume of natural rubber in September has increased, and the import volume of natural and synthetic rubber in October has decreased. - **Inventory**: The bonded - area inventory and the factory - warehouse futures inventory of natural rubber in the SHFE have increased, the出库 rate of dry rubber in the bonded warehouse in Qingdao has decreased, and the入库 and出库 rates of dry rubber in general trade in Qingdao have increased. [9] Pure Benzene and Styrene - **Upstream Price and Spread**: The prices of Brent crude oil, WTI crude oil, and CFR Japan naphtha have decreased, the price of CFR Northeast Asia ethylene has remained unchanged, the price of CFR China pure benzene has increased, the pure benzene - naphtha spread and ethylene - naphtha spread have decreased,

Group 1: Polyolefin Industry Core View PP shows a pattern of both supply and demand growth, with reduced maintenance driving supply recovery and inventory slightly accumulating under new - capacity pressure; PE shows increased supply and decreased demand. The market is in an oversupply situation, and it is recommended to gradually stop losses and reduce positions on previous short positions near the previous low, with limited expected rebound space [2]. Summary by Catalog - **Price and Spread**: On November 18, compared with November 17, L2601, L2605, PP2601, and PP2605 closing prices all declined, with L15 and PP15 spreads also decreasing. Spot prices of some products like East China PP filament and North China LDPE decreased, while North China LL basis and East China pp basis increased [2]. - **Inventory and开工率**: PE downstream weighted开工率 decreased by 0.80%, PE enterprise inventory increased by 7.96%, and social inventory decreased by 1.86%. PP装置开工率 increased by 2.28%, and downstream weighted开工率 increased by 0.3% [2]. Group 2: Methanol Industry Core View The inland market has increasing output, and marginal devices are in loss. The port methanol market is under pressure due to high inventory and increased Iranian shipments. The market is trading on the "weak reality" logic, and the inventory contradiction of the 01 contract cannot be resolved before Iranian gas restrictions [4]. Summary by Catalog - **Price and Spread**: On November 18, compared with November 17, MA2601 and MA2605 closing prices increased slightly, while MA15 spread decreased. Some regional spot prices changed slightly, and regional spreads also changed [4]. - **Inventory and开工率**: Methanol enterprise inventory decreased by 4.44%, port inventory increased by 3.80%, and social inventory increased by 2.10%. Upstream domestic and overseas enterprise开工率 increased slightly, while downstream - outer - purchased MTO装置开工率 decreased by 2.38% [4]. Group 3: Ester Industry Chain Core View PX supply remains at a relatively high level, and demand support is weak. PTA supply - demand is expected to be loose in the future, and its rebound space is limited. Ethylene glycol will see inventory accumulation, and its price is under pressure. Short - fiber supply is high, and demand is weak. Bottle - chip supply - demand is in a loose pattern [7]. Summary by Catalog - **Price and Spread**: On November 18, compared with November 17, prices of some upstream products like Brent crude oil increased, while prices of some downstream polyester products decreased. PX - related spreads and PTA - related spreads also changed [7]. - **Inventory and开工率**: MEG port inventory increased by 10.7%. Asian and Chinese PX开工率 decreased, PTA开工率 decreased slightly, and polyester综合开工率 decreased by 0.9% [7]. Group 4: Crude Oil Industry Core View The continuous attacks on Russian refineries and sanctions have increased concerns about crude oil supply, which has boosted oil prices in the short term. However, under the pressure of OPEC + continuous production increase and high US crude oil production, the crude oil supply - demand pattern is still weak, and the rebound space of oil prices is limited. Short - term Brent crude oil may fluctuate in the range of $60 - 66 per barrel [9]. Summary by Catalog - **Price and Spread**: On November 18, compared with November 17, Brent, WTI, and SC prices increased. Spreads such as Brent M1 - M3, WTI M1 - M3, and SC M1 - M3 also changed [9]. - **Product Price and Spread**: Prices of NYM RBOB, NYM ULSD, and ICE Gasoil increased, and their M1 - M3 spreads also increased [9]. - **Crack Spread**: Some crack spreads such as US gasoline and European gasoline changed, with US diesel and Singapore diesel crack spreads increasing significantly [9]. Group 5: Natural Rubber Industry Core View Supply - side factors support rubber prices, but overall demand is weak. The market is expected to enter range - bound consolidation, and attention should be paid to raw material output in the peak - production season of major producing areas and macro - level changes [10]. Summary by Catalog - **Price and Spread**: On November 18, compared with November 17, the price of Yunnan state - owned full - latex increased slightly, and the full - latex basis increased. Some raw material prices changed slightly [10]. - **Fundamental Data**: September production in Thailand, Indonesia, etc. changed. Tire开工率 of semi - steel and full - steel decreased slightly, and October domestic tire production decreased [10]. - **Inventory Change**: Bonded - area inventory and natural rubber factory - warehouse futures inventory increased, while the出库 rate of dry rubber in Qingdao changed [10]. Group 6: Pure Benzene and Styrene Industry Core View Pure benzene supply pressure is large, and its fundamentals are weak. Short - term BZ2603 may fluctuate or be short - biased at high levels. Styrene supply - demand has improved, and it may oscillate and repair in the short term, but its upward space is limited [11]. Summary by Catalog - **Price and Spread**: On November 18, compared with November 17, prices of some upstream products like Brent crude oil changed, and prices of pure benzene and styrene - related products also changed. Spreads such as EB - BZ现货价差 increased [11]. - **Inventory and开工率**: Pure benzene Jiangsu port inventory increased, and Asian and domestic pure benzene开工率 changed. Styrene开工率 increased, and downstream ABS开工率 increased slightly [11]. Group 7: LPG Industry Core View No clear overall view is mentioned in the text, mainly presenting price, inventory, and开工率 data [13]. Summary by Catalog - **Price and Spread**: On November 18, compared with November 17, PG2512, PG2601, etc. prices decreased, and spreads such as PG12 - 01 decreased [13]. - **Inventory and开工率**: LPG refinery storage - capacity ratio decreased slightly, port inventory decreased by 5.66%, and port storage - capacity ratio decreased. Upstream - main refinery开工率 decreased slightly, and downstream - PDH开工率 decreased by 4.92% [13]. Group 8: Glass and Soda Ash Industry Core View Soda ash is in an oversupply situation, and it is recommended to wait for short - selling opportunities after a rebound. Glass has short - term rigid - demand support, but in the medium - and long - term, demand will shrink, and prices will be under pressure [15]. Summary by Catalog - **Price and Spread**: On November 18, compared with November 17, glass and soda ash futures prices decreased slightly, and their basis increased [15]. - **开工率 and Production**: Soda ash开工率 decreased by 1.72%, and weekly production decreased by 1.71%. Float - glass daily melting volume remained unchanged [15]. - **Inventory and Real - Estate Data**: Glass warehouse inventory increased, and some real - estate data such as new - construction area and sales area changed [15]. Group 9: PVC and Caustic Soda Industry Core View Caustic soda supply - demand has pressure, and its price is expected to oscillate weakly. PVC is in an oversupply situation, and its price is expected to continue the bottom - weakening pattern [16]. Summary by Catalog - **Price and Spread**: On November 18, compared with November 17, prices of PVC and caustic soda - related products decreased slightly, and their basis and spreads changed [16]. - **Inventory and开工率**: Caustic soda and PVC inventory decreased slightly. Caustic soda and PVC开工率 decreased, and downstream开工率 of caustic soda and PVC also changed [16].

1. Report Industry Investment Ratings - No investment ratings are provided in the reports. 2. Core Views Polyolefins - PP shows a pattern of both supply and demand increasing, with reduced maintenance driving supply recovery and inventory slightly accumulating under new - capacity pressure. PE shows increased supply and decreased demand, with abundant imported goods and weakening demand except for agricultural film. It is recommended to gradually stop losses and reduce positions on previous short positions near the previous low, and the market is expected to have limited rebound space [2]. Methanol - In the inland market, Baofeng continues to purchase externally, and Jiutai has unexpected maintenance. Iranian gas restrictions are postponed, and shipments are accelerating, putting pressure on the port methanol market. The market is trading under the "weak reality" logic, and the 01 - contract inventory contradiction cannot be resolved. It is recommended to pay attention to the marginal device operation [4]. Crude Oil - The short - term crude oil market has no clear direction. The continuous sanctions on Russia by Europe and the United States and the attacks on Russian refineries by Ukrainian drones support the oil price, but the continuous production increase of OPEC+ and the record - high US crude oil production limit the rebound space. Brent oil is expected to fluctuate between 60 - 66 dollars per barrel [7]. Natural Rubber - Supply - side factors such as cold weather in Yunnan and continuous rainy season in southern Thailand may keep raw material prices high. Demand is weak, and the market is expected to enter a range - bound consolidation. If raw material supply is smooth, there may be further downward space; otherwise, the rubber price is expected to run between 15000 - 15500 [10]. Pure Benzene and Styrene - Pure benzene supply is expected to be relatively loose, with limited demand support and high port inventory. The short - term rebound space of BZ2603 is limited, and it is recommended to wait and see. Styrene's supply - demand situation has improved in November, but the rebound space is also limited, and attention should be paid to the pressure around 6600 - 6700 for EB12 [11]. Glass and Soda Ash - Soda ash has an overall surplus pattern, with high production and inventory transfer to the middle and lower reaches. It is recommended to wait and see in the short - term and look for opportunities to short on rebounds. Glass has short - term rigid demand support but faces long - term demand contraction pressure, and it is expected to be weak in the medium - term [12]. Polyester Industry Chain - PX supply remains at a relatively high level, and the short - term demand has support, but the rebound sustainability is insufficient. PTA is expected to be in a tight balance in November and loose in the future. MEG is expected to have inventory accumulation, and short - fiber and bottle - chip also face supply - demand challenges [13]. PVC and Caustic Soda - Caustic soda has supply - demand pressure, with weak demand from the alumina industry, and the price is expected to fluctuate weakly. PVC is in an oversupply situation, with weak demand and limited upward driving force [14]. 3. Summary by Related Catalogs Polyolefins - **Prices and Spreads**: L2601, L2605, PP2601, and PP2605 prices decreased slightly. L15 and PP15 spreads increased. Spot prices of some products decreased, and some basis values changed [2]. - **Inventory and开工率**: PE and PP enterprise inventories increased, and social inventories of PE decreased. The PE and PP device and downstream weighted开工率 showed different trends [2]. Methanol - **Prices and Spreads**: MA2601 and MA2605 prices decreased. Some basis values and regional spreads changed. Methanol enterprise inventory decreased, while port and social inventories increased [4]. - **开工率**: Domestic and overseas upstream enterprise开工率 increased, while some downstream开工率 decreased [4]. Crude Oil - **Prices and Spreads**: Brent, WTI, and SC prices had different changes. Some spreads such as Brent M1 - M3 and WTI M1 - M3 decreased [7]. - **Product Prices**: Some refined product prices such as NYM RBOB decreased, while NYM ULSD increased [7]. Natural Rubber - **Prices and Spreads**: Some spot prices such as Yunnan state - owned whole - latex remained unchanged, and some spreads changed [10]. - **Fundamentals**: Production in some countries decreased, while China's production increased. Tire production and export showed different trends, and import volume increased [10]. Pure Benzene and Styrene - **Upstream Prices and Spreads**: Crude oil, naphtha, and other prices changed, and some spreads such as pure benzene - naphtha increased [11]. - **Benzene - Styrene Prices and Spreads**: Benzene - styrene prices increased, and some spreads and cash - flows changed [11]. - **Downstream Cash - flows and开工率**: Cash - flows of some downstream products changed, and the开工率 of some products also changed [11]. Glass and Soda Ash - **Prices and Spreads**: Glass and soda ash futures and spot prices had different changes, and some basis values changed [12]. - **Supply and Inventory**: Soda ash production and开工率 decreased, and glass melting volume remained unchanged. Inventories of glass and soda ash increased [12]. Polyester Industry Chain - **Upstream Prices**: Crude oil, naphtha, and other prices changed [13]. - **Downstream Product Prices and Cash - flows**: Prices and cash - flows of polyester products such as POY, FDY, and DTY changed [13]. - **PX, PTA, and MEG**: PX, PTA, and MEG prices, spreads, and开工率 had different changes, and MEG port inventory and arrival expectations were also provided [13]. PVC and Caustic Soda - **Prices and Spreads**: PVC and caustic soda futures and spot prices changed, and some spreads and basis values changed [14]. - **Supply and Demand**: Supply - side开工率 of PVC and caustic soda changed, and demand - side downstream开工率 also changed. Inventories of PVC and caustic soda decreased [14].