氯碱开工提升，库存小幅累积

1. Report Industry Investment Rating No relevant content provided. 2. Core View of the Report The current supply - demand pattern of the PVC market is generally weak, but the release of the draft for soliciting opinions on the differential electricity price policy in Shaanxi and overseas device shutdowns support the PVC futures to rebound. The macro - expectation has improved, but after the macro - sentiment fades, the futures price fluctuates and corrects. The supply of domestic PVC is abundant, the downstream start - up is slightly decreasing, and the social inventory is slightly increasing. The caustic soda market also has a weak supply - demand situation, with inventory accumulation and some downstream start - up rates decreasing. The overall market is affected by both supply - demand fundamentals and macro - factors [1][2][3]. 3. Summary by Relevant Catalogs PVC Market Data - Futures Price and Basis: The closing price of the PVC main contract is 4,905 yuan/ton (-67), the East China basis is -245 yuan/ton (+27), and the South China basis is -265 yuan/ton (+7) [1]. - Spot Price: The East China calcium carbide - based PVC is quoted at 4,660 yuan/ton (-40), and the South China calcium carbide - based PVC is quoted at 4,640 yuan/ton (-60) [1]. - Upstream Production Profit: The price of semi - coke is 750 yuan/ton (+0), the price of calcium carbide is 2,780 yuan/ton (+0), the calcium carbide profit is -110 yuan/ton (+0), the gross profit of calcium carbide - based PVC production is -634 yuan/ton (+80), the gross profit of ethylene - based PVC production is -192 yuan/ton (+87), and the PVC export profit is -27.4 US dollars/ton (+7.0) [1]. - Inventory and Start - up: The in - factory PVC inventory is 32.8 tons (+1.9), the social PVC inventory is 54.6 tons (+2.1), the calcium carbide - based PVC start - up rate is 77.46% (+0.45%), the ethylene - based PVC start - up rate is 70.73% (-3.33%), and the overall PVC start - up rate is 75.42% (-0.70%). The production enterprise's pre - sales volume is 90.9 tons (+9.4) [1]. Market Analysis The overall supply - demand pattern of the PVC market is weak. The release of the draft for soliciting opinions on the differential electricity price policy in Shaanxi and overseas device shutdowns support the PVC futures to rebound. The macro - expectation has improved, but after the macro - sentiment fades, the futures price fluctuates and corrects. The domestic PVC supply is abundant, the downstream start - up is slightly decreasing, and the social inventory is slightly increasing. The export orders remain resilient [3]. Strategy - Single - side: Fluctuate with the macro - situation [4]. - Inter - delivery Spread: Wait and see [5]. - Inter - commodity Spread: None [5]. Caustic Soda Market Data - Futures Price and Basis: The closing price of the SH main contract is 2,218 yuan/ton (-43), and the basis of 32% liquid caustic soda in Shandong is -68 yuan/ton (+43) [1]. - Spot Price: The price of 32% liquid caustic soda in Shandong is 688 yuan/ton (+0), and the price of 50% liquid caustic soda in Shandong is 1,080 yuan/ton (+0) [2]. - Upstream Production Profit: The single - variety profit of caustic soda in Shandong is 1,125 yuan/ton (+0), the comprehensive profit of chlor - alkali in Shandong (0.8 tons of liquid chlorine) is 517.8 yuan/ton (-40.0), the comprehensive profit of chlor - alkali in Shandong (1 ton of PVC) is -194.20 yuan/ton (-10.00), and the comprehensive profit of chlor - alkali in the Northwest (1 ton of PVC) is 604.50 yuan/ton (+0.00) [2]. - Inventory and Start - up: The liquid caustic soda factory inventory is 49.51 tons (+0.94), the flake caustic soda factory inventory is 3.08 tons (+0.06), and the caustic soda start - up rate is 86.80% (+0.40%) [2]. - Downstream Start - up: The alumina start - up rate is 84.67% (-0.47%), the printing and dyeing start - up rate in East China is 60.09% (-0.72%), and the viscose staple fiber start - up rate is 88.43% (+3.38%) [2]. Market Analysis The caustic soda market has a weak supply - demand pattern. The futures price rebounds with the improvement of market expectations but then fluctuates and corrects. The inventory is accumulating, and the start - up rates of some downstream industries are decreasing [3]. Strategy - Single - side: Fluctuate with the macro - situation [5]. - Inter - delivery Spread: Wait and see [5]. - Inter - commodity Spread: None [5].