供强需弱，社会库存累积至高位

1. Report Industry Investment Rating No information provided regarding the report industry investment rating. 2. Core Viewpoints of the Report - The PVC market is currently in a situation of strong supply and weak demand, with high inventory levels. The overall industry pattern is deteriorating, facing double pressure from significant capacity growth and continuous decline in real - estate demand. In the short term, there are opportunities for short - selling on rallies, but it is necessary to guard against the return of anti - internal competition sentiment. In the medium term, without policies to clear out outdated production capacity, the supply - demand pattern will remain weak, and the industry may need to reduce valuations to clear out excess capacity [11]. 3. Summary by Directory 3.1 Monthly Assessment and Strategy Recommendation - Cost and Profit: Wuhai calcium carbide price is 2300 yuan/ton, up 100 yuan/ton month - on - month; Shandong calcium carbide price is 2730 yuan/ton, down 50 yuan/ton month - on - month; Shaanxi medium - grade semi - coke is 660 yuan/ton, up 40 yuan/ton month - on - month. Chlor - alkali integrated profit remains high, while ethylene - based profit declines, and overall valuation support is weak [11]. - Supply: PVC capacity utilization rate is 77.1%, up 0.3% month - on - month. Among them, calcium carbide method is 76.7%, up 0.7% month - on - month; ethylene method is 78.1%, down 0.9% month - on - month. Last month, maintenance volume decreased, and new device production was released, increasing supply pressure. This month, maintenance is expected to further decrease, and there are new device commissioning plans, so supply pressure will still be large [11]. - Demand: In July, exports to India rebounded due to the extension of BIS certification and anti - dumping. However, the final anti - dumping tax rate for India has been announced and is expected to be implemented in about a month, which will likely lead to a decline in exports. The overall downstream load is 43.5%, up 1.5% month - on - month, but still lower than the same period last year, and overall demand is weak. The key for the demand side is whether exports can exceed expectations [11]. - Inventory: At the end of the month, factory inventory is 31.6 tons, with a month - on - month de - stocking of 3 tons; social inventory is 91.8 tons, with a month - on - month inventory build - up of 19.6 tons; overall inventory is 123.4 tons, with a month - on - month inventory build - up of 16.6 tons; warehouse receipts continue to increase. Currently in the inventory build - up cycle, if exports do not exceed expectations, inventory build - up will continue [11]. 3.2 Futures and Spot Market The document mainly presents multiple charts related to the PVC futures and spot market, including PVC term structure, spot basis, 1 - 5 spread, active contract positions, trading volume, total positions, and total trading volume, but no specific text analysis is provided [15][16][23]. 3.3 Profit and Inventory - Inventory: Overall inventory has significantly increased. Factory inventory and social inventory trends are shown through charts, and the overall inventory is in a build - up state [31][37]. - Profit: Chlor - alkali integrated profit in Shandong using purchased calcium carbide, calcium carbide - based PVC profit, ethylene - based PVC profit, and Inner Mongolia calcium carbide profit trends are presented through charts, showing that the comprehensive profit of enterprises is at a high level this year, with relatively large valuation pressure [41]. 3.4 Cost Side Calcium carbide prices are fluctuating and rising, and inventory is increasing. The document also presents price trends of raw materials such as Shaanxi medium - grade semi - coke, 32% liquid caustic soda in Shandong, liquid chlorine in Shandong, Northeast Asian ethylene CFR spot price, etc., but no specific text analysis is provided [47][48][50]. 3.5 Supply Side - In 2025, the capacity release of PVC is relatively large, mainly concentrated in the third quarter. A total of 250 tons of new capacity is expected to be put into production, including multiple projects using calcium carbide method and ethylene method [58][65]. - In August, PVC maintenance was relatively less, and the operating rate in September is expected to remain high. The operating rates of calcium carbide method, ethylene method, and overall PVC are presented through charts [66]. 3.6 Demand Side - The operating rates of downstream industries such as PVC pipes, films, and profiles are presented through charts, showing that the overall downstream operating rate has slightly rebounded but is still lower than the same period last year, and overall demand is weak [75]. - PVC export volume, export volume to India, pre - sales volume, and the relationship between China's housing completion area and new construction area are presented through charts. The key for the demand side is whether exports can exceed expectations. After the implementation of India's anti - dumping tax rate, export expectations are expected to weaken [77][80][82].