中泰期货烧碱周报 ——液氯价格未能如预期下跌 烧碱期货价格承压下行 2025 . 9 . 2 8 中泰期货研究所 ：郭庆 从业资格号：F3049926 交易咨询从业证书号：Z0016007 （数据更新时间截止至每周五23：59） 目 录 CONTEN T S 0 1 综述 0 2 价格 0 3 供应 0 4 需求 综述 01 | | | 烧碱产业链简述 | | --- | --- | --- | | 供应 | 产量 | 本周期（20250919-0925）中国20万吨及以上烧碱样本企业产能平均利用率为82.5%，较上周环比+0.6%。西北新增装置减产检修，负荷下滑；华北、 | | | | 华东有装置检修结束提负，负荷提升。具体来看，西北-2.8%至86.3%；华东+4.5%至79.9%，华北+1.2%至79.6%，其中山东+0.3%至88.0%。隆众测算， | | | | 下周来看，除西南外，其他6大区均有不同程度提负。预计下周烧碱产能利用率85.9%左右，周产量84.57万吨左右。（预估数据源自隆众资讯） 本周期（20250919-0925），中国氧化铝产量185.5万吨，环比上周186.1万吨下滑；山东氧 ...

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]

Group 1: Main Points and Strategy Overview - The latest futures price of caustic soda is 2580 yuan/ton, with a week-on-week increase of 0.78%; the price of Shandong 32% caustic soda is 2406.25 yuan/ton, with a week-on-week decrease of 15.38%; the price of Shandong 50% caustic soda is 1250 yuan/ton, with a week-on-week decrease of 7.41% [5]. - China's caustic soda production is 820,000 tons, with a week-on-week decrease of 0.34%; North China's production is 270,000 tons, with a week-on-week decrease of 0.11%; Northwest China's production is 220,000 tons, with a week-on-week decrease of 4.44% [5]. - China's caustic soda operating rate is 81.9%, with a week-on-week decrease of 1.8%; Shandong's operating rate is 0.89, with a week-on-week increase of 2.01% [5]. - The inventory of liquid caustic soda is 378,300 tons, with a week-on-week increase of 6.03%; the inventory of flake caustic soda is 22,100 tons, with a week-on-week increase of 3.27%; Shandong's inventory is 29,500 tons, with a week-on-week decrease of 17.6% [5]. - The alumina operating rate is 86.23%, with a week-on-week increase of 1.2%; Shandong's alumina operating rate is 88.39%, with no change from the previous week; the viscose staple fiber operating rate is 89.52%, with a week-on-week increase of 1.99%; the chemical pulp operating rate is 86.4%, with a week-on-week increase of 6.27%; the printing and dyeing operating rate is 65.76%, with no change from the previous week [5]. - Shandong's chlor-alkali profit is 240.09 yuan/ton, with a week-on-week decrease of 35.17%; Northwest China's chlor-alkali profit is 525.05 yuan/ton, with a week-on-week increase of 0.79% [5]. Group 2: Futures and Spot Market Review - The report presents the historical trends of caustic soda futures prices, spot prices, basis, and other indicators through multiple charts [8][11][13][16][19][20][24][27][28][29][30]. Group 3: Caustic Soda Supply and Demand Fundamental Data - The report shows the historical trends of caustic soda capacity utilization, device loss, inventory, and other indicators through multiple charts [33][36][38][40][56][58][60][62][64][66][67][68][69][70][73]. - Supply-side positives: Formosa Plastics will conduct large-scale maintenance from the 16th to the 23rd, which will have a short-term driving effect on the surrounding area; Minxiang and Dadi have fully loaded their 50% caustic soda production; Guangxi alumina plants will start to stockpile caustic soda in October [75][76]. - Supply-side negatives: The FOB export transaction price of caustic soda in East China is between 390 - 410, and the transaction price of liquid caustic soda in Northeast Asia is between 410 - 420; Haili has fully loaded its production capacity; Binzhou's maintenance has been postponed; Weiqiao has vehicle queuing; Tianjin Bohua's device will be fully loaded in the second half of the month, and attention should be paid to Wenfeng's procurement [75][77].

1. Report Industry Investment Rating There is no information provided regarding the report industry investment rating. 2. Core Viewpoints of the Report - The current spot price of caustic soda is weakening within a certain range. The high - price caustic soda in Shandong faces downstream resistance, inventory is increasing, and the purchase price of major downstream buyers in Shandong is declining with cautious purchasing, but the futures market has already reflected this to some extent. - The supply output fluctuates normally due to maintenance. The cost remains stable, the price of liquid chlorine has increased, and the profit of chlor - alkali enterprises remains above 300 yuan/ton. - Non - aluminum downstream industries are generally stable, with non - aluminum rigid demand following up. - In the future, continue to pay attention to the spot price rhythm, the strength of the peak season, and the enthusiasm of downstream inventory replenishment. Currently, the overall supply - demand contradiction of caustic soda is limited, and periodic inventory replenishment and macro - expectations may affect the price rhythm [3][5]. 3. Summary by Relevant Catalogs Supply - According to Steel Union data, the weekly output of caustic soda this week is 818,300 tons, a decrease of 2,800 tons compared to last week, and the capacity utilization rate is 81.9% (a decrease of 1.5 percentage points). According to Baichuan data, the output of liquid caustic soda is 824,200 tons, a decrease of 7,000 tons compared to last week, and the output of flake caustic soda is 104,600 tons, a decrease of 1,900 tons compared to last week. There are more maintenance activities this week [3]. Inventory - According to Baichuan Yingfu statistics, the total inventory of liquid caustic soda factories nationwide is 243,000 tons (in terms of 100% purity), a 0.4% increase compared to last week. According to Longzhong data, the in - factory inventory of liquid caustic soda (samples of fixed liquid caustic soda with 200,000 tons and above) is 378,300 wet tons, a 6.02% increase compared to last week [3]. Profit - According to Longzhong data, the average weekly gross profit of chlor - alkali enterprises in Shandong is 328 yuan/ton, a 1.8% decrease compared to last week. This week, the theoretical production cost of caustic soda remains stable, the price of caustic soda weakens, the average weekly price of liquid chlorine increases, and the overall profit of chlor - alkali enterprises decreases slightly [3]. Demand - **Alumina**: Recently, the continuous decline in the prices of domestic and overseas alumina has continuously narrowed the profit margins of domestic alumina enterprises. Except for regular maintenance, insufficient supply of domestic ores, and the impact of heavy rain, there are no signs of large - scale production cuts among domestic enterprises. Coupled with the continuous import of overseas supplies in the later period, the support for spot prices from the supply side is weak in the short term [3]. - **Viscose staple fiber**: The market price of viscose staple fiber has remained stable this week [4]. Strategy Viewpoints - The current spot price of caustic soda is weakening within a range. The high - price liquid caustic soda in Shandong faces downstream resistance, inventory is increasing, and the purchase price of major downstream buyers in Shandong is declining with cautious purchasing, but the futures market has already reflected this to some extent. - The supply output fluctuates normally due to maintenance. The cost remains stable, the price of liquid chlorine has increased, and the profit of chlor - alkali enterprises remains above 300 yuan/ton. - Non - aluminum downstream industries are generally stable, with non - aluminum rigid demand following up. - In the future, continue to pay attention to the spot price rhythm, the strength of the peak season, and the enthusiasm of downstream inventory replenishment. Currently, the overall supply - demand contradiction of caustic soda is limited, and periodic inventory replenishment and macro - expectations may affect the price rhythm [5]. Caustic Soda Futures Market - **Futures prices**: On September 19, 2025, the prices of caustic soda 05, 09, and 01 contracts are 2,723 yuan/ton, 2,734 yuan/ton, and 2,641 yuan/ton respectively, with daily increases of 2.06%, 1.64%, and 2.36% respectively [5]. - **Monthly spreads**: The monthly spreads of (5 - 9), (9 - 1), and (1 - 5) are - 11, 93, and - 82 respectively, with daily changes of 11, - 17, and 6 respectively [5]. - **Basis**: The basis of 05, 09, and 01 contracts (Shandong Jinling) are - 317, - 328, and - 235 respectively, with daily changes of - 55, - 44, and - 61 respectively [5]. Spot Prices - **32% caustic soda**: The prices of most brands in different regions remain unchanged on September 19, 2025, except for Shandong Lutai, which decreased by 2.2% [7]. - **50% caustic soda**: The prices of most brands remain unchanged, except for Shandong Lutai, which decreased by 1.5% [8]. - **Flake caustic soda**: The market prices in different regions remain unchanged on September 19, 2025 [8]. Price Spreads - Most of the caustic soda brand/regional price spreads remain unchanged on September 19, 2025, except for the 50% caustic soda (Guangdong - Shandong), which increased by 50 yuan/ton [9].

1. Report Industry Investment Rating - No information provided 2. Core Views - PVC: The PVC market fluctuates mainly with macro - sentiment. The supply is abundant as domestic PVC device overhauls decrease and new production devices increase. Downstream demand remains weak, with low - level开工 of downstream products and mainly rigid - demand procurement. The export outlook in the fourth quarter is weak due to Indian policies. Social inventory is accumulating, and there is pressure on the futures price from hedging [3]. - Caustic Soda: The spot price of caustic soda is stable with a slight decline. The supply from chlor - alkali enterprises is at a relatively high level. The main downstream in Shandong, alumina factories, has stable purchase prices and increasing delivery volumes. Non - aluminum downstream industries have increased开工, with rigid - demand procurement. Cost support remains, and the chlor - alkali profit is at a medium level compared to the same period [3]. 3. Summary according to Catalogs Market News and Important Data PVC - Futures price and basis: The closing price of the PVC main contract is 4888 yuan/ton (+31), the East China basis is - 218 yuan/ton (- 11), and the South China basis is - 128 yuan/ton (- 31) [1]. - Spot price: The East China calcium carbide - based PVC is quoted at 4670 yuan/ton (+20), and the South China calcium carbide - based PVC is quoted at 4760 yuan/ton (+0) [1]. - Upstream production profit: The blue carbon price is 630 yuan/ton (+0), the calcium carbide price is 2780 yuan/ton (+0), the calcium carbide profit is - 14 yuan/ton (+0), the calcium carbide - based PVC production gross profit is - 421 yuan/ton (- 22), the ethylene - based PVC production gross profit is - 671 yuan/ton (- 43), and the PVC export profit is 9.7 dollars/ton (- 5.0) [1]. - Inventory and开工: The PVC in - factory inventory is 31.6 tons (+0.4), the social inventory is 53.3 tons (+1.1), the calcium carbide - based PVC开工 rate is 80.29% (+2.64%), the ethylene - based PVC开工 rate is 77.20% (+4.61%), and the overall PVC开工 rate is 79.39% (+3.21%) [1]. - Downstream orders: The pre - sales volume of production enterprises is 67.1 tons (- 2.5) [1]. Caustic Soda - Futures price and basis: The closing price of the SH main contract is 2590 yuan/ton (+14), and the basis of 32% liquid caustic soda in Shandong is 129 yuan/ton (- 14) [1]. - Spot price: The price of 32% liquid caustic soda in Shandong is 870 yuan/ton (+0), and the price of 50% liquid caustic soda in Shandong is 1360 yuan/ton (+0) [2]. - Upstream production profit: The single - variety profit of caustic soda in Shandong is 1728 yuan/ton (+0), the comprehensive profit of chlor - alkali in Shandong (0.8 tons of liquid chlorine) is 824.5 yuan/ton (+0.0), the comprehensive profit of chlor - alkali in Shandong (1 ton of PVC) is 532.53 yuan/ton (- 10.00), and the comprehensive profit of chlor - alkali in the Northwest (1 ton of PVC) is 1418.45 yuan/ton (+0.00) [2]. - Inventory and开工: The liquid caustic soda factory inventory is 35.68 tons (- 3.10), the flake caustic soda factory inventory is 2.21 tons (+0.07), and the caustic soda开工 rate is 83.40% (- 0.80%) [2]. - Downstream开工: The alumina开工 rate is 84.38% (- 1.20%), the dyeing开工 rate in East China is 65.76% (+0.13%), and the viscose staple fiber开工 rate is 87.77% (+0.67%) [2]. Market Analysis PVC - Supply: The number of domestic PVC device overhauls continues to decrease, and new production devices are increasing, resulting in an abundant supply [3]. - Demand: Downstream product开工 remains low, with enterprises purchasing only for rigid - demand. The raw material restocking willingness during the "Golden September and Silver October" peak season needs attention. The export outlook in the fourth quarter is weak due to Indian policies [3]. - Inventory: The social inventory of PVC continues to accumulate, and the absolute inventory value is high. The futures warehouse receipts are increasing, and there is pressure on the futures price from hedging [3]. Caustic Soda - Supply: The开工 rate of chlor - alkali enterprises is slightly increasing and at a high level in the same period [3]. - Demand: The main downstream in Shandong, alumina factories, has stable purchase prices and increasing delivery volumes. Non - aluminum downstream industries have increased开工, with rigid - demand procurement. Attention should be paid to the restocking rhythm during the "Golden September and Silver October" peak season and the production start - up rhythm of alumina in Guangxi [3]. - Cost and profit: The electricity price in Shandong has a slight increase in September, and there is some resistance from downstream after the reduction of liquid chlorine subsidies. It is expected that liquid chlorine subsidies will continue to increase, and cost support remains. The chlor - alkali profit is at a medium level compared to the same period [3]. Strategy PVC - Single - side: Fluctuate with macro - sentiment - Inter - delivery: Long V01 and short V05 to capture price fluctuations - Inter - variety: No strategy Caustic Soda - Single - side: Wait and see

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report No clear core viewpoints are explicitly stated in the provided content. 3. Summary by Relevant Catalogs PART ONE: Main Views and Strategy Overview - The report presents a table of caustic soda's main weekly data, including prices, production, operating rates, inventory, and cost - profit data. For instance, the futures price of caustic soda is 2670.0 yuan/ton, down 2.59% from last week; China's production is 810,000 tons, down 0.38% [4]. PART TWO: Review of Futures and Spot Market Quotes - Multiple charts are presented, showing the trends of caustic soda's basis, prices of different types of caustic soda (such as 32% and 50% caustic soda), and trading volume of different contracts over different time periods from 2019 to 2025 [7][10][12] PART THREE: Caustic Soda Supply - Demand Fundamental Data - There are various charts showing data related to caustic soda's supply - demand fundamentals, including device loss volume, capacity utilization, inventory in different regions of China (such as North China, East China, and Northwest China), and ECU profits in different provinces (such as Shandong, Jiangsu, and Zhejiang) from 2019 to 2025 [30][33][35] - Charts also display the operating rates of downstream industries such as epoxy chloropropane, epoxy propane, and PVC, as well as the operating rates in different regions like Shandong and Northwest China over different time periods [69]

Report Industry Investment Rating - Not provided Core Viewpoints of the Report - The upward trend of caustic soda in the spot market is not over, but the time for a strong rally has not yet arrived. The core lies in the concentrated stockpiling in the alumina and export sectors. Short - term warehouse receipt factors may lead to a phased correction, but there is no need to be overly pessimistic about Zhejiang warehouse receipts [4] Summary by Relevant Catalogs Fundamental Tracking - The futures price of the 11 - contract is 2732, the price of the cheapest deliverable 32% caustic soda in Shandong is 860, the Shandong spot 32% caustic soda converted to the futures price is 2688, and the basis is - 45 [3] - Taking Shandong as the benchmark, the purchase price of 32% caustic soda by major downstream enterprises in Shandong over the weekend was raised by 15 yuan to 815 yuan. Before that, small - scale buyers in the province had already started to raise prices, and caustic soda plants slightly followed suit with a 10 - yuan increase over the weekend. Currently, the short - term inventory of liquid caustic soda in the province remains low, and attention should be focused on changes in the delivery volume to major downstream enterprises [3] Market Condition Analysis - The core driver of the current caustic soda market is the continuous expansion of demand. Non - aluminum demand is expected to improve during the peak season. In Guangxi, there are expectations of 3.6 million tons of alumina production capacity to be put into operation by the end of this year. If the tank - filling and stockpiling go smoothly, the demand is expected to start in October. The caustic soda supply in Guangxi is tight, and most of the caustic soda for tank - filling needs to be purchased from outside. With the flake - liquid caustic soda price spread at a high level this year, the subsequent alumina stockpiling will drive the circulation of domestic 50% caustic soda. If the flake - liquid caustic soda price spread remains strong and the 50 - 32% caustic soda price spread widens, caustic soda will face a continuous positive feedback, and the upward driving force will be stronger than the current situation [4] - The 9.3 military parade affects caustic soda transportation. Recently, the delivery volume of caustic soda to an alumina plant in Shandong has been continuously low, and its purchase price was further raised this weekend. Today, the delivery volume to major downstream enterprises is still lower than the daily consumption and has decreased compared to the previous period [4] - In terms of exports, the support is still strong. The export direction has expanded significantly year - on - year this year, but the stockpiling rhythm will affect the domestic caustic soda price. On the supply side, the weakness of chlorine - consuming downstream industries such as PVC will limit the substantial expansion of the overall industry profit [4] Trend Intensity - The trend intensity of caustic soda is 0, with the value range of trend intensity being an integer within the [- 2, 2] interval. The strength levels are classified as weak, relatively weak, neutral, relatively strong, and strong, where - 2 represents the most bearish and 2 represents the most bullish [5][6]

Report Summary 1) Report Industry Investment Rating - No industry investment rating is provided in the report [1] 2) Core View - The domestic liquid caustic soda market had fair transactions today, with prices stable in most regions, rising slightly in Shandong, Hubei, and Guangxi for 32% liquid caustic soda, and rising in Shandong for 50% liquid caustic soda. The game between bulls and bears is intense, and it is recommended to continue to stay on the sidelines [1] 3) Summary by Relevant Catalogs Market Price - **Raw Salt**: The prices in Shandong, Jiangsu, and Northwest regions remained stable at 200, 250, and 200 respectively [1] - **Calcium Carbide**: The price in Inner Mongolia increased by 50 to 2260, while that in Shandong remained at 2755 [1] - **Liquid Chlorine**: The prices in Shandong, Jiangsu, and Northwest regions remained stable at -200, -200, and -600 respectively [1] - **32% Liquid Caustic Soda**: The price in Shandong increased by 10 to 850, while that in Jiangsu remained at 900 [1] - **50% Liquid Caustic Soda**: The price in Shandong increased by 10 to 1350, while that in Jiangsu remained at 1400 [1] - **Caustic Soda Flakes**: The prices in Shandong, Inner Mongolia, Guangdong, and Southwest regions remained stable at 3300, 3150, 3725, and 3750 respectively [1] - **PVC**: The prices in Shandong and Inner Mongolia remained stable at 4750 and 4525 respectively [1] Futures and Basis - **Futures Main Contract**: The closing price increased by 54 to 2741 [1] - **Basis**: The basis in Shandong decreased by 23 to -85, and that in Jiangsu decreased by 54 to 72 [1] Price Spreads - **50% Caustic Soda - 32% Caustic Soda Spread**: The spread in Shandong decreased by 11 to 44 [1] - **Caustic Soda Flakes - 50% Caustic Soda Spread**: The spread in Guangdong remained stable at 585 [1] - **50% Caustic Soda Regional Spread**: The spread between the East and Shandong decreased by 10 to 220 [1] - **Caustic Soda Flakes Regional Spread**: The spreads between Southwest and Inner Mongolia, and between Southwest and Shandong remained stable at 600 and 450 respectively [1] Profits and Electricity Prices - **Chlor - Alkali Profits**: The profit in Shandong increased by 35 to -90, while that in the Northwest decreased by 68 to 781 [1] - **Electricity Prices**: The electricity prices in Shandong and Inner Mongolia remained stable at 0.75 and 0.5 respectively [1] Operation Strategy - The game between bulls and bears is intense, and it is recommended to continue to stay on the sidelines [1]

1. Report Industry Investment Rating No information provided. 2. Core Viewpoints of the Report - Last week, the strong downstream demand for caustic soda drove the continuous rise of caustic soda futures. By the Friday afternoon close, the weighted price of caustic soda futures reached 2,756 yuan/ton, a 4.51% increase from the previous week. The favorable fundamentals also led to an increase in both futures and spot prices of caustic soda [6][7][11]. - The caustic soda futures are expected to remain strong. After a pullback, long - position operations should still be considered [9]. 3. Summary by Relevant Catalogs 3.1 Caustic Soda Trend Review - Last week, the caustic soda futures continued to rise due to strong downstream demand. The weighted price of caustic soda futures closed at 2,756 yuan/ton on Friday afternoon, up 4.51% from the previous week. In the spot market, the weekly average price of 32% caustic soda in Shandong was 836 yuan/ton, a 3.98% increase from the previous week [6][11]. 3.2 Caustic Soda Fundamental Analysis - **Capacity Utilization**: Last week, the average capacity utilization rate of China's caustic soda enterprises with a capacity of 200,000 tons and above was 83.2%, a 0.9% decrease from the previous week. There were different trends in different regions, such as a 3.9% decrease in the Northwest to 87.1% and a 0.1% increase in Shandong to 88.4% [15]. - **Downstream Demand**: The operation of the main downstream industries of caustic soda was generally stable. The alumina production remained stable, and the capacity utilization rate of viscose staple fiber increased by 0.18% to 86.22% [18]. - **Liquid Caustic Soda Inventory**: As of August 21, 2025, the inventory of fixed liquid caustic soda sample enterprises with a capacity of 200,000 tons and above was 396,400 tons (wet tons), a 9.46% decrease from the previous week. Inventory trends varied by region, with most regions experiencing inventory declines, while the inventory in the Northwest increased slightly [21]. - **Profit of Chlor - Alkali Enterprises in Shandong**: Last week, the theoretical production cost of caustic soda remained stable, the price of caustic soda increased, and the average weekly price of liquid chlorine decreased. The average weekly gross profit of chlor - alkali enterprises in Shandong was 349 yuan/ton, a 21.18% increase from the previous week [24]. 3.3 Caustic Soda Trend Outlook - **Liquid Caustic Soda**: In East China, major enterprises are expected to undergo maintenance this week, and non - aluminum stocking demand is increasing. The inventory pressure on enterprises is not significant, and the price of liquid caustic soda is expected to rise steadily. The price of liquid caustic soda in eastern Shandong may still increase [28]. - **Flake Caustic Soda**: The market in other domestic regions is mainly consolidating. In Inner Mongolia, the maintenance devices are gradually resuming production, and the new order quotes of manufacturers are expected to remain stable [9].

Report Summary 1) Report Industry Investment Rating - The investment rating for the caustic soda industry is "Bullish with caution on near - month warehouse receipts" [1] 2) Core View of the Report - The caustic soda market's core driver is the continuous expansion of demand. With rising alumina demand and strong export support, the market is expected to have upward - driven spot prices during the downstream peak season. However, the weakness of chlorine - consuming downstream industries may limit profit expansion and cause potential passive production cuts. Overall, a bullish view is maintained, but near - month warehouse receipts need attention in the short term [1] 3) Summary by Relevant Content Fundamental Tracking - The futures price of the 11 - contract is 2700, the price of the cheapest deliverable 32% caustic soda in Shandong is 850, the Shandong spot 32% caustic soda converted to the futures price is 2656, and the basis is - 44 [1] Spot News - Based on Shandong, supported by a 20 yuan/ton increase in the procurement price of major downstream, local caustic soda plants raised prices to varying degrees. With low inventory pressure, the short - term market is expected to remain at a high level [1] Market Condition Analysis - Demand side: Alumina's rigid and stocking demand is rising, especially with 3.6 million tons of alumina production capacity expected to be put into operation in Guangxi by the end of this year, leading to tight local supply and increased demand for 50% caustic soda. The 93 - parade affects transportation, and a Shandong alumina plant may raise its procurement price. Export support remains strong, but inventory - building rhythms affect domestic prices [1] - Supply side: The weakness of chlorine - consuming downstream industries like PVC limits profit expansion and may cause passive production cuts in the future [1] Trend Intensity - The trend intensity of caustic soda is 1, indicating a moderately bullish view [2]