1. Report Industry Investment Rating - No information provided in the report. 2. Core Viewpoints of the Report - The market continues to trade on the Fed's interest rate cut path, and attention should be paid to the latest US non - farm payroll data. During the National Day holiday, the market is shipping based on previous orders, and enterprises may face some pressure. The price of liquid caustic soda in the East China region is expected to remain stable, while in the Shandong market, due to the approaching holiday, there is no obvious positive news on the demand side, and the inventory of local alkali plants is likely to increase, with the possibility of price cuts in the near future. The spot trend in Shandong is weak, demand is lower than expected, and the futures price is running weakly. Attention should be paid to whether it can stop falling and stabilize after the holiday. The recommended trading strategy is to set the upper reference pressure level for the caustic soda 2601 contract at 2700 yuan/ton and the lower support level at 2400 yuan/ton [4]. 3. Summary According to the Directory 3.1 Market Review - **Spot Market**: The report presents multiple charts showing the price trends of caustic soda in different regions (Shandong, Jiangsu, Zhejiang), the price differences between different types of caustic soda (32% and 50% ion - membrane caustic soda, flake caustic soda), and the price relationships between caustic soda and related products (such as raw salt, liquid chlorine). The data is sourced from Wind and Mysteel. In the week from 20250919 - 20250925, the price of 32% ion - membrane caustic soda in Shandong remained at 800 yuan/ton, the price of 50% ion - membrane caustic soda decreased by 2.36% to 1270 yuan/ton, the price of 98% flake caustic soda in the Northwest remained at 3230 yuan/ton, and the price of liquid chlorine in Shandong remained at - 150 yuan/ton. The price of alumina in Shandong decreased by 1.86% to 2950 yuan/ton [10][13][18]. - **Futures Market**: The report shows the price trends of caustic soda futures and its comparison with other related futures (soda ash, alumina, PVC), as well as the relationship between the caustic soda futures price and the number of warehouse receipts. The data is sourced from Wind and Mysteel [16]. 3.2 Market Analysis - **Supply Side: Production and Operating Rate**: In the week of 20250919 - 0925, the average capacity utilization rate of Chinese caustic soda sample enterprises with a capacity of 200,000 tons and above was 82.5%, a week - on - week increase of 0.6%. The load in the Northwest decreased due to new device maintenance, while the load in North and East China increased after device maintenance. It is estimated that the weekly capacity utilization rate of caustic soda this week will be around 85.9%, and the weekly output will be around 845,700 tons. The report also lists the maintenance plans of multiple enterprises [22][23]. - **Downstream Demand**: For alumina, the current spot supply in northern China is relatively loose, while the market - available spot in Henan and Southwest China is still tight. The supply of domestic ore remains tight, and some enterprises continue to purchase imported ore. The production is relatively stable, but the narrowing profit due to falling prices makes enterprises more willing to negotiate lower prices for raw materials. It is expected that the domestic alumina price will continue to adjust weakly in the short term, with a price range of 2850 - 3100 yuan/ton. In the week of 20250919 - 20250925, the capacity utilization rate of the viscose staple fiber industry was 89.82%, a week - on - week increase of 0.3% [27]. - **Inventory**: As of September 25, 2025, the factory inventory of fixed liquid caustic soda sample enterprises with a capacity of 200,000 tons and above was 391,200 wet tons, a week - on - week increase of 3.4% and a year - on - year increase of 26.26%. The storage capacity ratio of liquid caustic soda sample enterprises was 20.78%, a week - on - week increase of 0.64%. The storage capacity ratios in the Northwest, North, Central, and East China increased, while those in the Northeast, South, and Southwest decreased. In the North China region, the demand for 32% caustic soda in Shandong was poor, and the inventory increased; the high - concentration caustic soda inventory decreased. In Tianjin and Hebei, the inventory increased due to increased supply. In the South China region, the inventory decreased due to reduced supply. In the Central China region, the inventory increased due to increased supply. In the East China region, the inventory increased slightly due to increased supply. In the Northwest region, the inventory in Gansu and Ningxia decreased due to maintenance, while the inventory in Shaanxi increased due to poor sales. In the Southwest region, the inventory decreased due to active pre - holiday stocking [30]. - **Liquid Chlorine**: As of September 25, 2025, the average price of liquid chlorine in Shandong increased by 32.26% to - 150 yuan/ton. The price increase was affected by the reduced supply in Jiangsu, and then remained stable. The supply and demand in Shandong did not change significantly, and downstream procurement was stable. In Hebei and the Northeast, the load of chlor - alkali enterprises increased, and downstream pre - holiday stocking was active, which supported the price of liquid chlorine. As of September 26, 2025, the capacity utilization rate of Chinese PVC was 76.96%, a week - on - week decrease of 2.98%. It is estimated that the capacity utilization rate this week will increase to 82.17% due to the increased operation of some enterprises. In the week of 20250919 - 20250925, the average weekly profit of Shandong chlor - alkali enterprises was 258 yuan/ton, a week - on - week decrease of 21.34%. The theoretical production cost of caustic soda remained stable, the caustic soda price decreased significantly, the average weekly price of liquid chlorine increased, and the chlor - alkali profit decreased [33][34].

Group 1: Report Title and Date - The report is titled "Caustic Soda October 2025 Monthly Report" and was released on September 29, 2025 [4][16][22] Group 2: Fundamental Situation 1. Market Data Charts - Include charts on caustic soda's September price trend (yuan/ton), Shandong alumina large - scale plant's liquid caustic soda delivery volume (tons), purchase price (yuan/ton), Shandong liquid caustic soda wet - ton inventory (tons), Shandong 32% caustic soda spot market price (yuan/ton), alumina weekly start - up rate (%), alumina price trend (yuan/ton), caustic soda monthly export volume (tons), export volume to Australia (tons), export volume to Indonesia (tons), export profit (yuan/ton), monthly production volume (tons), monthly start - up rate (%), weekly start - up rate (%), weekly production volume (tons), Shandong caustic soda profit (yuan/ton), and Shandong chlor - alkali comprehensive profit (yuan/degree) [12][14][20][27][30][35][39][42][43][45][47] 2. Capacity Data Domestic Alumina New Capacity - In 2025, the total new capacity is 1080 tons, with projects like Shandong's Weiqiao Zhanhua adding 200 tons, Shandong's Weiqiao replacement reducing 250 tons, etc. In 2026, the total new capacity is 1270 tons, including projects in Guangxi and Inner Mongolia [28] Overseas Alumina New Capacity - From 2025 to 2026, the total new capacity is 925 tons, including projects in Indonesia, India, and Vietnam [37] Caustic Soda New Device Capacity - In 2025, the total new capacity is 210 tons, with projects from companies such as Qingdao Gulf, Tianjin Bohua Chemical Development, etc. [50] Group 3: Market Outlook and Strategy Recommendation - The report does not provide specific content on market outlook and strategy recommendation in the given text.

1. Chlor - Alkali Industry Report Industry Investment Rating Not provided Core Viewpoints - For caustic soda, in Q4, the downside space is limited. There may be concentrated stocking behavior in Q4 due to alumina's planned production in Q1 next year. Short - term demand has support, but future alumina purchase prices may be lowered [2]. - For PVC, in Q4, the downside space is limited during the peak season. The supply is in an excess pattern, and the demand in Q3 did not show well. Exports have alleviated some excess pressure, and attention should be paid to cost support and downstream demand [2]. Summary by Catalog - **Prices**: On September 26, compared with September 25, the prices of some caustic soda and PVC products changed. For example, the price of Shandong 32% liquid caustic soda (converted to 100%) remained unchanged at 2500 yuan/ton, while the price of East China calcium carbide - based PVC decreased by 20 yuan/ton to 4740 yuan/ton [2]. - **Supply**: The overall start - up rate of the PVC industry increased by 0.7 percentage points to 76.1% on September 26 compared with September 19. The start - up rate data of the caustic soda industry was not available [2]. - **Demand**: The start - up rates of some downstream industries of caustic soda and PVC changed slightly. For example, the start - up rate of the alumina industry remained unchanged at 83.7%, and the start - up rate of the Longzhong sample pipe industry increased by 1.3 percentage points to 40.4% [2]. - **Inventory**: As of September 25, compared with September 18, the inventory of liquid caustic soda in East China factories and Shandong increased, while the total social inventory of PVC remained unchanged at 53.5 million tons [2]. 2. Polyester Industry Chain Report Industry Investment Rating Not provided Core Viewpoints - For PX, in Q4, the supply - demand is expected to be weak, and the price will be under pressure. Strategies include shorting on rebounds and reverse - arbitraging on high spreads [6]. - For PTA, in Q4, the supply - demand is expected to be weak, and it will follow the cost side to fluctuate weakly. Strategies include shorting on rebounds and reverse - arbitraging on the TA1 - 5 spread [6]. - For ethylene glycol, in Q4, it is expected to enter the inventory accumulation stage, and the price is under pressure. Strategies include shorting EG01 and reverse - arbitraging on the EG1 - 5 spread [6]. - For short - fiber, in the short - term, the price may be supported, but if the terminal demand in October cannot follow up, the supply - demand will turn to an expected pattern, and the processing fee is expected to be compressed [6]. - For bottle - chips, in Q4, it is likely to enter the seasonal inventory accumulation stage, and the processing fee is under pressure. Strategies include following the PTA for single - side trading and shorting the processing fee on high spreads [6]. Summary by Catalog - **Prices**: On September 26, compared with September 25, the prices of various products in the polyester industry chain changed. For example, the price of POY150/48 increased by 75 yuan/ton to 6605 yuan/ton, and the price of PTA East China spot increased by 5 yuan/ton to 4590 yuan/ton [6]. - **Supply - demand and Inventory**: In Q4, the supply of PX and domestic ethylene glycol is expected to be high, while the demand of downstream products such as PTA and bottle - chips is in the off - season. The inventory of MEG ports and domestic urea is also in a state of change [6]. - **Start - up Rate**: The start - up rates of various industries in the polyester industry chain changed weekly. For example, the start - up rate of Asian PX decreased by 0.2 percentage points to 78.0%, and the start - up rate of domestic PTA remained unchanged at 76.8% [6]. 3. Polyolefin Industry Report Industry Investment Rating Not provided Core Viewpoints - For LLDPE and PP, currently, the inventory of PE and PP has decreased. However, after the holiday, there is a large inventory pressure, and with new capacity coming on - stream, the inventory accumulation pressure of the 01 contract is large, which limits the upside space [9]. Summary by Catalog - **Prices**: On September 26, compared with September 25, the prices of L2601, PP2601 and other contracts decreased slightly. For example, the closing price of L2601 decreased by 10 yuan/ton to 7159 yuan/ton [9]. - **Inventory**: As of the relevant update time, the enterprise inventory and social inventory of PE and PP decreased. For example, the PE enterprise inventory decreased by 3.2 million tons to 45.8 million tons [9]. - **Start - up Rate**: The start - up rates of PE and PP devices increased. For example, the start - up rate of PE devices increased by 1.48 percentage points to 81.8%, and the start - up rate of PP devices increased by 0.63 percentage points to 75.5% [9]. 4. Methanol Industry Report Industry Investment Rating Not provided Core Viewpoints - In the short - term, methanol will continue to fluctuate. The supply side has a balance between the resumption of some domestic devices and the expected reduction of overseas supply. The demand side is weak, and attention should be paid to overseas device operation and domestic demand realization [39]. Summary by Catalog - **Prices**: On September 26, compared with September 25, the closing price of MA2601 increased slightly, and the basis of Taicang changed. For example, the closing price of MA2601 increased by 1 yuan to 2356 yuan/ton [39]. - **Inventory**: As of the Wednesday update, the enterprise inventory, port inventory and social inventory of methanol decreased. For example, the methanol enterprise inventory decreased by 2.05 million tons to 31.994 million tons [39]. - **Start - up Rate**: On September 26, compared with the previous value, the start - up rate of domestic upstream enterprises increased, while the start - up rate of overseas enterprises decreased. For example, the start - up rate of domestic upstream enterprises increased by 1.61 percentage points to 74.27% [39]. 5. Pure Benzene - Styrene Industry Report Industry Investment Rating Not provided Core Viewpoints - For pure benzene, the supply is expected to be high due to the resumption of some devices and new capacity coming on - stream. The demand support is limited, and the price driving force is weak. BZ2603 should follow the benzene - styrene and oil prices to fluctuate [42]. - For styrene, the supply is expected to increase, and the demand support may be limited. The price is still under pressure. EB11 should be shorted on rebounds, and the EB11 - BZ11 spread can be widened at low levels, but the driving force is limited [42]. Summary by Catalog - **Prices**: On September 26, compared with September 25, the prices of pure benzene and styrene - related products changed. For example, the price of pure benzene East China spot decreased by 35 yuan/ton to 5865 yuan/ton, and the price of styrene East China spot decreased by 20 yuan/ton to 6910 yuan/ton [42]. - **Inventory**: As of the weekly update, the inventory of pure benzene in Jiangsu ports decreased, while the inventory of styrene in Jiangsu ports increased. For example, the pure benzene inventory in Jiangsu ports decreased by 2.7 million tons to 10.7 million tons [42]. - **Start - up Rate**: The start - up rates of various industries in the pure benzene and styrene industry chain changed. For example, the start - up rate of domestic pure benzene increased by 0.9 percentage points to 79.3%, and the start - up rate of styrene decreased by 0.2 percentage points to 73.2% [42]. 6. Urea Industry Report Industry Investment Rating Not provided Core Viewpoints - The urea futures price fluctuates downward. The supply - demand is in a loose pattern, with high domestic production, weak demand, and a weak international price. The export policy adjustment and new Indian tender have not effectively boosted market confidence [50]. Summary by Catalog - **Prices**: On September 26, compared with September 25, the prices of urea futures contracts decreased slightly. For example, the closing price of the 01 contract decreased by 5 yuan/ton to 1669 yuan/ton [46]. - **Supply - demand and Inventory**: The daily and weekly production of urea increased, and the inventory in factories increased, while the port inventory decreased. For example, the domestic daily urea production decreased by 0.1 million tons to 19.94 million tons, and the domestic factory inventory increased by 5.29 million tons to 121.82 million tons [50]. 7. Crude Oil Industry Report Industry Investment Rating Not provided Core Viewpoints - In Q4, oil prices are likely to maintain a wide - range oscillating pattern. In early October, they may be strong due to geopolitical risks and low inventory. In the middle, they may face pressure due to increased production and inventory recovery. In the later period, they may trend weakly due to loose supply and weakened geopolitical risks. It is recommended to use a band - trading strategy for single - side trading, a positive - arbitrage strategy for arbitrage, and wait for opportunities to widen the volatility in the options market [52]. Summary by Catalog - **Prices**: On September 29, compared with September 26, the prices of Brent, WTI, SC and other crude oil products decreased. For example, the price of Brent decreased by 0.56 US dollars/barrel to 69.57 US dollars/barrel [52]. - **Spreads**: The spreads of Brent M1 - M3, WTI M1 - M3, SC M1 - M3 and other indicators changed. For example, the WTI M1 - M3 spread decreased by 2.82 US dollars/barrel to 0.92 US dollars/barrel [52].

Report Summary 1. Industry Investment Rating No investment rating is provided in the report. 2. Core Views - **Caustic Soda**: In Q3, caustic soda showed a wide - range oscillation. After the non - aluminum restocking ended, the demand was mainly for rigid needs. The main downstream, alumina, had high inventory and low restocking willingness. However, due to the planned alumina capacity expansion in Q1 2025, there might be concentrated restocking in Q4 2024, limiting the downside space of caustic soda. The downstream restocking rhythm needs to be tracked [3]. - **PVC**: In Q3, the PVC market was in a continuous decline. The supply was at a high level with an obvious surplus, and the demand in the peak season was weak. Although exports alleviated some of the surplus pressure, the cost of raw materials provided bottom - level support. In Q4, the cost support should be focused on, and the downside space during the peak season is limited. Attention should be paid to the downstream demand performance [4]. 3. Summary by Related Catalogs Caustic Soda - **Price and Market Dynamics**: The price of caustic soda fluctuated widely in Q3. Factors such as macro - policies, supply - demand changes in the main production areas, and the price of liquid chlorine affected the price. The market was worried about the subsequent supply return and the weakening of downstream demand [9]. - **Supply**: The industry's operating rate declined slightly, and Shandong's caustic soda plants continued to accumulate inventory in Q3. As of September 24, the inventory of 32% liquid caustic soda in expanded sample enterprises in East China and Shandong increased compared with September 17 [22][28]. - **Downstream Demand** - **Alumina**: From the end of 2024 to 2025, the planned alumina capacity to be put into production is 12.3 million tons (including 2 million tons of replacement), with an estimated annual production increase of about 6%. The new alumina projects will increase the demand for caustic soda by about 800,000 tons per year. In Q4 2024, there may be restocking due to the planned capacity expansion in Q1 2025 [30][33]. - **Non - aluminum**: The printing and dyeing operating rate increased seasonally, but the pre - holiday restocking has ended [52]. - **Export**: The export volume decreased in August, but the estimated export profit increased again in September [58]. PVC - **Price and Market Dynamics**: In Q3, the PVC futures and spot prices both declined. The supply - demand relationship lacked positive drivers, and the macro - atmosphere was poor, leading to a continuous decline in the market [65]. - **Profit**: The industry's profit declined quarter - on - quarter in Q3, with both the ethylene - based and calcium - carbide - based production methods facing profit pressure [71]. - **Supply**: The production volume was high in Q3, and the overall operating rate decreased recently. Although there were many maintenance enterprises this week, some have gradually resumed production [81][87]. - **Downstream Demand** - **Profiles and Pipes**: The two major downstream industries of PVC, profiles and pipes, faced great pressure, and the demand was weak. The real - estate industry, with the goal of "reducing inventory and stabilizing prices", continued to have a negative impact on demand [94]. - **Real - Estate Data**: The real - estate industry is still in the bottom - building cycle, with indicators such as housing sales price index, land transaction area, and new construction area showing weak performance [95]. - **Inventory**: The inventory increased in Q3, and the total inventory was at the highest level in recent years compared with the same period [102]. - **External Market and Export**: In August 2025, the PVC import volume decreased, and the export volume decreased month - on - month but increased year - on - year. The export window to Southeast Asia and India has opened [114][120].

Core Viewpoint - Hubei Xingrui Silicon Materials Co., Ltd. successfully passed the review for the renewal of its production license for chlor-alkali products, indicating compliance with national regulations and standards [1] Group 1: License Renewal - The review was conducted by the Hubei Provincial Industrial Product License Review Group, which evaluated the company's compliance with necessary licensing conditions [1] - The evaluation included aspects such as quality management responsibilities, resource provision, human resource allocation, technical document management, process quality control, product quality inspection, and safety production [1] - The review group acknowledged the company's efforts in ensuring product quality safety and fulfilling quality responsibility, leading to the approval of the license renewal [1]

1. Report Industry Investment Ratings No relevant information is provided in the reports. 2. Report Core Views Chlor - Alkali Industry - **Caustic Soda**: In the fourth quarter, the downside space is limited. Although the current downstream demand is mainly based on rigid - need purchases, there may be procurement willingness after the National Day due to low prices. In the fourth quarter, there may be concentrated stocking behavior, and the spot liquidity may tighten [2]. - **PVC**: In the fourth quarter, pay attention to cost support. Although the supply is in an over - capacity situation, exports have alleviated some pressure. The cost side provides bottom support, and the downside space during the peak season is limited [2]. Polyester Industry Chain - **PX**: In the fourth quarter, the supply - demand is expected to be weak, and the PXN has a compression expectation. The price will be under pressure due to weak cost - side support and weak supply - demand expectations [6]. - **PTA**: In the fourth quarter, it is difficult to have an independent market and may follow the cost side to fluctuate weakly [6]. - **Ethylene Glycol**: In the fourth quarter, it is expected to enter a period of inventory accumulation as it enters the demand off - season [6]. Polyolefin Industry - **LLDPE and PP**: For LLDPE, the current maintenance is at a high point, and the inventory of the upper - middle reaches is being depleted. For PP, unplanned maintenance has increased due to losses, and the inventory has decreased. However, after the festival, there is a large inventory pressure, and the new capacity release limits the upside space [9]. Methanol Industry - **Methanol**: In the short term, it will continue the volatile pattern. The supply side has a game between the expected supply reduction and the relatively healthy inventory structure. The demand side is weak as the traditional downstream enters the seasonal off - season, and the new polyolefin device production expectations suppress the MTO demand [21]. Pure Benzene - Styrene Industry - **Pure Benzene**: The supply - demand is expected to be loose, and the price driving force is weak. It is necessary to pay attention to the oil price trend and macro - market sentiment [25]. - **Styrene**: The supply - demand is expected to be loose, and the price is under pressure. In the short term, it is affected by geopolitical and macro - news [26]. Fertilizer Industry - **Urea**: The futures price fluctuates downward. The daily output is high, the demand is weak, and the export situation is uncertain [31]. Crude Oil Industry - **Crude Oil**: In the fourth quarter, the oil price will likely maintain a wide - range volatile pattern. Unilateral trading is recommended to use a band - trading strategy, and arbitrage is recommended to use a positive - spread strategy [33][35]. 3. Summary by Relevant Catalogs Chlor - Alkali Industry - **Spot and Futures Prices**: On September 26, compared with September 25, the prices of some products such as East China PVC by calcium carbide method decreased slightly, and the prices of some caustic soda products remained unchanged [2]. - **Overseas Quotes and Export Profits**: The overseas quotes of caustic soda and PVC were mostly stable, but the export profit of caustic soda decreased by 26.3%, and that of PVC increased by 323.8% [2]. - **Supply**: The overall PVC start - up rate increased by 0.9%, while the data of caustic soda start - up rate was not available [2]. - **Demand**: The start - up rates of some downstream industries of caustic soda and PVC increased slightly, and the PVC pre - sales volume increased by 0.5% [2]. - **Inventory**: The inventories of liquid caustic soda in East China factories and Shandong, and PVC upstream factories increased, while the total PVC social inventory remained unchanged [2]. Polyester Industry Chain - **Upstream Prices**: On September 26, compared with September 25, the prices of Brent and WTI crude oil increased, while the prices of some products such as CFR Japan naphtha decreased [6]. - **PX - Related Prices and Spreads**: The prices of CFR China PX and PX spot in RMB decreased [6]. - **PTA - Related Prices and Spreads**: The PTA spot price in East China increased slightly, and the PTA futures price decreased [6]. - **MEG - Related Prices and Spreads**: The MEG spot price in East China decreased, and the MEG futures price also decreased [6]. Polyolefin Industry - **Futures and Spot Prices**: On September 26, compared with September 25, the prices of L2601, PP2601 and other futures decreased slightly, and the price of East China PP raffia decreased by 0.3% [8][9]. - **Inventory and Start - up Rates**: The enterprise and social inventories of PE and PP decreased, and the start - up rates of PE and PP devices increased [9]. Methanol Industry - **Prices and Spreads**: On September 26, compared with September 25, the prices of MA2601 and MA2509 decreased slightly, and the regional spreads changed [21]. - **Inventory**: The enterprise, port and social inventories of methanol decreased [21]. - **Start - up Rates**: The start - up rate of upstream domestic enterprises increased, while the start - up rates of some downstream industries decreased [21]. Pure Benzene - Styrene Industry - **Upstream Prices and Spreads**: On September 26, compared with September 25, the prices of some upstream products such as CFR China pure benzene decreased, and the import profit of pure benzene decreased [25]. - **Styrene - Related Prices and Spreads**: The prices of styrene in East China spot and futures decreased slightly [25]. - **Inventory and Start - up Rates**: The pure benzene inventory in Jiangsu ports decreased, while the styrene inventory increased. The start - up rates of some industries in the pure benzene and styrene industry chain changed [25]. Fertilizer Industry - **Fertilizer Prices**: The prices of various fertilizers such as ammonium sulfate and sulfur are provided on September 26 [28][29]. - **Urea Data**: The daily and weekly production, inventory, and order days of urea are presented. The daily output is high, and the demand is weak [31]. Crude Oil Industry - **Crude Oil Prices and Spreads**: On September 29, compared with September 26, the prices of Brent, WTI and SC crude oil decreased, and the spreads changed [33]. - **Refined Oil Prices and Spreads**: The prices of refined oil products such as NYM RBOB and NYM ULSD decreased, and the spreads also changed [33]. - **Refined Oil Crack Spreads**: The crack spreads of some refined oil products such as US gasoline and diesel changed [33].

Report Industry Investment Rating - Not provided in the content Core Viewpoints - This week, the caustic soda futures showed a significant downward trend, with short - sellers actively increasing positions to push down the futures price, and there were stop - loss phenomena among long - sellers. The main reasons include weak spot prices, the non - decline of liquid chlorine prices contrary to expectations, and the continuous decline of alumina spot and futures prices. In the later stage, the caustic soda futures may be supported by the liquid chlorine price, especially during the National Day holiday. Therefore, the caustic soda futures should be treated with a volatile mindset [5]. Summary by Directory 01 Overview - **Supply**: In the period from September 19 - 25, 2025, the average capacity utilization rate of Chinese caustic soda sample enterprises with a capacity of 200,000 tons and above was 82.5%, a 0.6% week - on - week increase. Northwest had new device production cuts and maintenance, while North China and East China had increased loads after device maintenance. Next week, except for the Southwest region, other six regions are expected to increase their loads, with an estimated capacity utilization rate of about 85.9% and a weekly output of about 845,700 tons [5]. - **Demand - Alumina**: China's alumina production was 1.855 million tons, a decline from last week's 1.861 million tons. Shandong's alumina production remained flat at 626,000 tons. The liquid caustic soda purchase price of large - scale alumina factories in Shandong dropped to 740 yuan/ton, with a 100% converted price of 2,313 yuan/ton. Alumina prices and production profits declined recently [5]. - **Demand - Viscose Staple Fiber**: China's viscose staple fiber production was 90,000 tons, a 30 - ton increase from last week. As of September 25, 2025, the total daily output of 20 domestic viscose staple fiber enterprises was around 12,960 tons. The physical inventory of domestic viscose staple fiber factories was 128,200 tons, a 50 - ton decrease from the previous period and a 32,000 - ton increase compared to the same period last year, a year - on - year increase of 33.26%. The downstream demand for viscose staple fiber was weak [5]. - **Demand - Printing and Dyeing**: As of September 25, 2025, the comprehensive startup rate in the Jiangsu and Zhejiang regions was 66.15%, a 0.4% increase from the previous period. The average startup rate of printing and dyeing enterprises in Zhejiang was 66.25%, remaining flat compared to the previous data and a 1.25% increase year - on - year. The overall startup rate of dyeing factories in Zhejiang remained stable, with orders featuring "short, frequent, and fast" characteristics. Most dyeing factories planned to have a 2 - 3 - day holiday during the National Day [5]. - **Export**: In August, the export volume of liquid caustic soda was 213,500 tons, and the export volume of flake caustic soda was 66,800 tons [5]. - **Inventory**: As of September 25, 2025, the factory inventory of fixed liquid caustic soda sample enterprises with a capacity of 200,000 tons and above in China was 391,200 tons (wet tons), a 3.4% week - on - week increase and a 26.26% year - on - year increase. The storage capacity ratio of domestic liquid caustic soda sample enterprises was 20.78%, a 0.64% week - on - week increase [5]. - **Profit**: This Friday, the average price of Shandong liquid caustic soda was 2,500 yuan/ton, the average price of liquid chlorine was - 100 yuan/ton, and the chlor - alkali profit was 306 yuan/ton, at a historically low level. The decline in liquid caustic soda prices compressed the comprehensive chlor - alkali profit [5]. - **Strategy**: Adopt a volatile mindset for single - side trading; no strategy for arbitrage and options [5]. 02 Price - The report presents price trends of Shandong chlor - alkali spot, flake caustic soda, export caustic soda, caustic soda futures, basis, inter - month spreads, raw salt, and coal, with data sources from Mysteel and compiled by Zhongtai Futures [7][10][13][16] 03 Supply - **Caustic Soda Supply**: Data on China's weekly caustic soda production, caustic soda startup rate, caustic soda device loss volume, and cumulative caustic soda production are provided, with data sources from Mysteel and compiled by Zhongtai Futures [20][21] - **Caustic Soda Inventory and Chlor - Alkali Profit**: Information on the liquid caustic soda inventory of Chinese sample enterprises, caustic soda futures warehouse receipts, and Shandong chlor - alkali enterprise profits is presented, with data sources from Mysteel and compiled by Zhongtai Futures [23][24] - **Chlor - Alkali Device Maintenance Plan**: This week, many chlor - alkali devices have resumed operation after maintenance, and there are also some devices under maintenance. In the future, multiple enterprises have maintenance plans, including specific time and capacity information [26] 04 Demand - **Alumina Industry**: Data on China's alumina production, Shandong's alumina production, alumina profit, Shandong alumina enterprises' liquid caustic soda purchase price, and alumina inventory are provided, with data sources from Mysteel and compiled by Zhongtai Futures [29][30][31][32] - **Textile Industry**: Information on viscose staple fiber capacity utilization rate, market price, factory inventory, inventory available days of viscose staple fiber in Chinese rayon yarn enterprises, textile enterprise weekly startup rate, order days, in - factory finished product inventory available days, and Jiangsu and Zhejiang region printing and dyeing factory startup rate is presented, with data sources from Mysteel and compiled by Zhongtai Futures [34][35][37][38] - **Pulp and Paper Industry**: Data on pulp production, paper product production, and the inventory available days of paper products in upstream factories are provided, with data sources from Mysteel and compiled by Zhongtai Futures [39][40] - **Export**: Data on China's monthly export volume of liquid caustic soda, flake caustic soda, cumulative export volume of caustic soda, and monthly export volume of caustic soda are presented, with data sources from Mysteel and compiled by Zhongtai Futures [41][42]

1. Report Industry Investment Rating - Not provided in the given content 2. Report's Core View - **Caustic Soda**: The spot price of 32% caustic soda has been continuously decreasing, while the orders for 50% caustic soda have improved and the price has stabilized. The supply is expected to slightly increase next week, and the demand from the main downstream alumina industry is weak, with a strong expectation of a decline in the long - term purchase price next month. The inventory of 50% caustic soda has decreased, but the national liquid caustic soda inventory has increased this week. The non - aluminum demand has a potential for seasonal improvement. The cost support remains, but the chlor - alkali profit is at a relatively low level compared to the same period [1][2]. - **PVC**: The PVC market fluctuates with the macro - environment. The supply is abundant, and the downstream consumption is limited. The export shows some resilience but may be affected by Indian policies in the fourth quarter. The social inventory is slightly decreasing, but the absolute value is high. The futures price is under pressure from high - level hedging [5]. 3. Summary According to the Directory I. Caustic Soda Price & Spread - As of September 26, 2025, the SH main contract closing price of caustic soda is 2528 yuan/ton (- 9), the basis of 32% liquid caustic soda in Shandong is - 28 yuan/ton (+ 9), the spot price of 32% liquid caustic soda in Shandong is 800 yuan/ton (+ 0), and the spot price of 50% liquid caustic soda in Shandong is 1300 yuan/ton (+ 0) [1]. II. PVC Price & Spread - As of September 26, 2025, the main contract closing price of PVC is 4897 yuan/ton (- 38), the East China basis is - 177 yuan/ton (+ 28), the South China basis is - 87 yuan/ton (+ 18), the spot price of calcium carbide - based PVC in East China is 4720 yuan/ton (+ 0), and in South China is 4820 yuan/ton (+ 10) [4]. III. Cost Profit - **Caustic Soda**: As of September 26, 2025, the comprehensive profit of chlor - alkali in Shandong (1 ton of caustic soda + 0.8 tons of liquid chlorine) is 725.78 yuan/ton (+ 0.00), the comprehensive profit of chlor - alkali in Shandong (1 ton of caustic soda + 1 ton of PVC) is 179.78 yuan/ton (+ 0.00), and the single - product profit of caustic soda in Shandong is 1508.90 yuan/ton (+ 0.00) [2]. - **PVC**: As of September 26, 2025, the single - product production profit of calcium carbide - based PVC is - 783.91 yuan/ton (- 126.66), the single - product production profit of ethylene - based PVC is - 645.37 yuan/ton (+ 6.84), and the export profit of PVC is 7 US dollars/ton (+ 1) [5]. IV. Caustic Soda Supply - As of September 26, 2025, the caustic soda operating rate is 82.50% (+ 0.60%), and the weekly production of caustic soda is 81.29 tons (+ 0.60). Next week, the production may slightly increase as some previously shut - down enterprises resume production and new shutdowns are limited [1][2]. V. Liquid Chlorine Price and Liquid Chlorine Downstream - As of September 26, 2025, the price of liquid chlorine in Shandong is - 100 yuan/ton (+ 0). The operating rates of downstream products such as propylene oxide and epichlorohydrin have decreased, while the operating rate of dichloromethane has increased, and the weekly production of chloroform has increased [2]. VI. PVC Supply - As of September 26, 2025, the average operating load of upstream calcium carbide is 64.58% (+ 0.43%), the PVC operating rate is 78.97% (+ 2.01%), and the loss due to shutdown and maintenance is 12.77 tons (- 1.03). The new production capacity is gradually reaching full production, and the supply is abundant [4][5]. VII. Caustic Soda Downstream Demand - The operating rate of the main downstream alumina is 85.95% (- 0.28%), the weekly production of alumina is 185.50 tons (- 0.60), and the port inventory is 7.20 (+ 1.40). The operating rates of non - aluminum industries such as printing and dyeing, viscose staple fiber, white cardboard, and broad - leaf pulp have increased [1]. VIII. PVC Downstream Demand - The comprehensive operating rate of PVC downstream is 47.76% (- 1.50%), among which the operating rate of PVC pipes is 40.43% (+ 1.30), the operating rate of PVC profiles is 38.91% (- 0.52), and the operating rate of PVC films is 63.93% (- 12.99). The pre - sales volume of production enterprises is 75.92 tons (+ 0.35) [4]. IX. Caustic Soda & PVC Inventory Data - **Caustic Soda**: The factory inventory of liquid caustic soda in China is 39.12 tons (+ 1.29), and the factory inventory of flake caustic soda is 2.08 tons (- 0.10) [2]. - **PVC**: The factory inventory of PVC is 31.82 tons (+ 1.20), the social inventory of PVC is 53.47 tons (+ 0.01), including 48.34 tons in East China (+ 0.13) and 5.13 tons in South China (- 0.12) [5].

1. Report Industry Investment Rating - Not provided in the content 2. Core Viewpoints - The PVC market fluctuates with the macro - environment. Supply is abundant due to new production capacity and reduced maintenance losses. Downstream demand shows some improvement, but the market is affected by export policies and high inventory. The烧碱 market sees a decline in 32% alkali prices and stable 50% alkali prices. Demand from alumina is stable but with high - price delivery issues, and non - aluminum demand is gradually recovering. Attention should be paid to downstream replenishment and new alumina production [3] 3. Summary by Related Catalogs Market News and Important Data PVC - **Futures Prices and Basis**: The PVC main contract closed at 4935 yuan/ton (+16), with an East China basis of - 205 yuan/ton (-6) and a South China basis of - 105 yuan/ton (+4) [1] - **Spot Prices**: East China calcium carbide - based PVC was quoted at 4730 yuan/ton (+10), and South China calcium carbide - based PVC was quoted at 4830 yuan/ton (+20) [1] - **Upstream Production Profits**: The semi - coke price was 690 yuan/ton (+0), the calcium carbide price was 2890 yuan/ton (+0), the calcium carbide profit was 48 yuan/ton (+0), the PVC calcium carbide - based production gross profit was - 657 yuan/ton (-155), the PVC ethylene - based production gross profit was - 652 yuan/ton (+20), and the PVC export profit was 5.2 dollars/ton (+0.1) [1] - **Inventory and Operating Rates**: PVC factory inventory was 30.6 tons (-0.4), social inventory was 53.5 tons (+0.3), the calcium carbide - based PVC operating rate was 76.97% (+0.06%), the ethylene - based PVC operating rate was 74.12% (+2.12%), and the overall PVC operating rate was 76.11% (+0.68%) [1] - **Downstream Orders**: The pre - sales volume of production enterprises was 75.6 tons (+6.7) [1] 烧碱 - **Futures Prices and Basis**: The SH main contract closed at 2537 yuan/ton (-11), and the Shandong 32% liquid alkali basis was - 37 yuan/ton (+11) [1] - **Spot Prices**: Shandong 32% liquid alkali was quoted at 800 yuan/ton (+0), and Shandong 50% liquid alkali was quoted at 1300 yuan/ton (+0) [2] - **Upstream Production Profits**: The single - variety profit of Shandong caustic soda was 1509 yuan/ton (+0), the Shandong chlor - alkali comprehensive profit (0.8 tons of liquid chlorine) was 685.8 yuan/ton (+0.0), the Shandong chlor - alkali comprehensive profit (1 ton of PVC) was 179.78 yuan/ton (+10.00), and the Northwest chlor - alkali comprehensive profit (1 ton of PVC) was 1381.75 yuan/ton (+0.00) [2] - **Inventory and Operating Rates**: Liquid alkali factory inventory was 39.12 tons (+1.29), flake caustic soda factory inventory was 2.08 tons (-0.10), and the caustic soda operating rate was 82.50% (+0.60%) [2] - **Downstream Operating Rates**: The alumina operating rate was 86.23% (+1.02%), the East China printing and dyeing operating rate was 66.15% (+0.39%), and the viscose staple fiber operating rate was 89.82% (+0.30%) [2] Market Analysis PVC - The PVC market fluctuates with the macro - environment. Supply is abundant due to new production capacity and reduced maintenance losses. Downstream demand shows some improvement, but the market is affected by export policies and high inventory. Attention should be paid to pre - National Day replenishment sentiment and macro - environment impacts [3] 烧碱 - The 32% alkali price has been continuously decreasing, while the 50% alkali price has stabilized. Production may increase slightly as some maintenance enterprises resume operations. Demand from alumina is stable but with high - price delivery issues. The 50% alkali inventory reduction drives the Shandong caustic soda inventory decline, but the national liquid alkali inventory has increased. Attention should be paid to the 32% alkali sales situation, non - aluminum demand resilience, new alumina production, and downstream replenishment [3] Strategy PVC - **Single - side Trading**: Fluctuate widely with the macro - environment [4] - **Inter - delivery Spread Trading**: Wait and see [4] - **Inter - commodity Spread Trading**: None [4] 烧碱 - **Single - side Trading**: Wait and see [5] - **Inter - delivery Spread Trading**: Go long on the SH01 - 05 spread when it is low [5] - **Inter - commodity Spread Trading**: None [5]

Report Summary 1. Investment Ratings The report does not provide any industry investment ratings. 2. Core Views - **Chlor - Alkali Industry**: The caustic soda market has a high supply, and there is a possibility of price cuts. PVC is expected to stop falling and stabilize in the peak season from September to October, but the supply - demand contradiction is still difficult to ease [2]. - **Crude Oil Industry**: The current oil market shows a game between weak macro - expectations and tight spot fundamentals. It is likely to operate in a short - term range. It is recommended to focus on unilateral segment operations [24]. - **Methanol Industry**: The port inventory has decreased. The supply in the inland is at a relatively high level, and the demand is weak. The overall valuation is neutral, and the futures price fluctuates between high inventory and overseas gas - restriction expectations [29]. - **Urea Industry**: The urea futures market shows a weak and volatile pattern, mainly due to the deepening contradiction between high supply and weak demand. Although the cost provides some support, it is difficult to reverse the market downturn [37]. - **Polyolefin Industry**: PP production has decreased recently, and the inventory has declined. PE maintenance has reached a high point, and the upstream and mid - stream inventory has decreased. The pressure of inventory accumulation for 01 contracts is relatively large, which limits the upward space [43]. - **Polyester Industry**: PX supply increases, and the fourth - quarter supply - demand is expected to be weak. PTA supply is expected to shrink, and the short - term basis is supported. Ethylene glycol supply - demand is gradually weakening. Short - fiber support is strong in the short - term, and bottle - chip supply - demand is still loose [46]. - **Styrene Industry**: The supply of pure benzene is loose, and the demand support is limited. The overall supply - demand of styrene is relatively loose, and the port inventory has accumulated, so the price may be under pressure [53]. 3. Summary by Directory Chlor - Alkali Industry - **Prices**: From September 24th to 25th, the prices of some caustic soda products remained unchanged, while PVC prices showed a slight increase. The futures prices of some contracts decreased slightly [2]. - **Supply and Demand**: The caustic soda industry's operating rate decreased slightly, and the PVC total operating rate decreased by 5%. The demand for downstream products of caustic soda and PVC generally increased [2]. - **Inventory**: The inventory of liquid caustic soda in Shandong increased, while the inventory in some areas decreased. The PVC upstream factory inventory decreased slightly, and the total social inventory increased slightly [2]. Crude Oil Industry - **Prices**: On September 26th, Brent crude oil rose by 0.16%, WTI rose by 0.45%, and SC fell by 1.55%. The spreads of some contracts changed significantly [24]. - **Market Logic**: The market focus has shifted from geopolitical risks and tight supply to concerns about the macro - economy. The strong US economic data and the expected resumption of crude oil supply in the Kurdish region of Iraq put pressure on oil prices, while the supply interruption concerns caused by the Russia - Ukraine conflict support the price [24]. Methanol Industry - **Prices**: From September 24th to 25th, the prices of some methanol futures contracts increased slightly, and the spot prices of some regions decreased slightly [29]. - **Inventory**: The port inventory decreased, mainly due to increased demand for pick - up and a significant decrease in the unloading volume of imported ships [29]. - **Supply and Demand**: The supply in the inland is at a high level, and the demand is affected by the traditional off - season. The overall valuation is neutral [29]. Urea Industry - **Futures Market**: The futures prices of urea showed a weak and volatile pattern. The trading volume decreased, and the long - short ratio decreased slightly [34]. - **Upstream and Downstream**: The prices of upstream raw materials were relatively stable, and the prices of downstream products were mostly unchanged. The cross - regional spreads and basis differences changed to some extent [35][36][37]. - **Supply and Demand**: The daily output of urea was at a high level, the agricultural demand was in the off - season, and the industrial demand was dragged down by the decline in the compound fertilizer operating rate [37]. Polyolefin Industry - **Prices**: From September 24th to 25th, the prices of some polyolefin futures contracts and spot prices increased slightly, and the spreads between some contracts decreased significantly [43]. - **Inventory**: The inventory of PE and PP decreased. The operating rates of PE and PP devices increased slightly, and the downstream weighted operating rates also increased [43]. Polyester Industry - **Prices**: On September 25th, the prices of some polyester products changed. The prices of upstream raw materials such as crude oil and PX also fluctuated. The spreads and processing fees of related products changed [46]. - **Supply and Demand**: The supply of PX increased, the supply of PTA was expected to shrink, ethylene glycol supply - demand was gradually weakening, short - fiber supply was at a high level, and bottle - chip supply - demand was still loose [46]. Styrene Industry - **Prices**: From September 24th to 25th, the prices of upstream raw materials and styrene - related products changed to some extent. The cash flows of some products improved [49][50][51]. - **Inventory**: The pure benzene inventory in Jiangsu ports decreased, and the styrene inventory increased [52]. - **Supply and Demand**: The supply of pure benzene was loose, and the demand support was limited. The overall supply - demand of styrene was relatively loose, and the port inventory had accumulated [53].