氯碱周报：SH：下游存补库需求，关注现货端补库节奏，V：供需矛盾较难解决，但绝对价格偏低空单有限-20251027

Report Industry Investment Rating No relevant content provided. Core Views Caustic Soda - In the short term, the supply of caustic soda is at a high level, the price of downstream alumina continues to weaken, industry profits are shrinking, and demand - side support is weak, resulting in insufficient support for market prices. In the medium term, as the demand procurement cycle approaches and downstream has restocking needs, caustic soda prices are expected to be supported. Considering the production schedule, there will be more alumina production in Q1 2026, so there may be concentrated stockpiling in Q4 2025, which may tighten spot liquidity. For non - aluminum sectors, after the National Day, as the previous non - aluminum inventory decreases, there may be purchasing willingness due to low prices. It is recommended to stop profiting on existing short positions and track downstream restocking rhythms [2]. PVC - This week, the PVC futures market stopped falling and stabilized, showing a volatile trend. On the supply side, there were still many maintenance enterprises this week, resulting in low production loads. However, it is expected that some maintenance enterprises will end maintenance next week, increasing production and bringing supply back to a high level. On the demand side, domestic downstream construction remains low, product orders are limited, and downstream continues to purchase on a need - to - basis at low prices. The cost of raw material calcium carbide has been rising, but the increase is limited, and the ethylene price may be lowered next week. The cost side provides bottom - level support. In the future, the logic of a lackluster peak season is expected to continue, the futures market will still face pressure, but the absolute price is already low, and a short - term operation strategy of shorting on rebounds is recommended [3]. Summary by Directory Caustic Soda Price and Market Trends - The caustic soda futures price has shown significant fluctuations due to various factors such as macro - economic conditions, alumina price changes, and cost movements. For example, factors like the relaxation of Sino - US tariff conflicts, the strengthening of alumina profits, and the expectation of alumina production resumption have affected the spot - buying willingness and futures prices [6]. Supply - The weekly weighted average operating load rate of sample enterprises in major regions across the country was 85.55%, a 0.1 - percentage - point increase from last week. The caustic soda production in terms of 100% purity was 82.53 tons, a 0.12% increase from last week. Although there were many chlor - alkali device maintenance activities, some enterprises with previously low loads increased their production. Multiple enterprises across different regions are in maintenance or have planned maintenance, with a total weekly maintenance loss of 6.92 tons [25][26]. Demand - Alumina is a major downstream consumer of caustic soda. From late 2025 to 2026, the planned alumina production capacity is 12.3 million tons (including 2 million tons of replacement), with an estimated annual production capacity growth rate of around 10%. The estimated alumina annual output in 2026 will exceed 88 million tons, with a production growth rate of around 6%. The new alumina projects are expected to increase the demand for caustic soda by about 800,000 tons per year, with a relatively concentrated demand increase of 150,000 tons from April to June. In addition, the non - aluminum downstream sectors, such as the printing and dyeing industry, have a seasonal increase in the operating rate, while the viscose staple fiber industry has a decline in the operating rate [30][50]. Export - In September 2025, the export profit of caustic soda increased, and the export volume rebounded significantly. However, the estimated export profit declined in October [54]. PVC Price and Market Trends - The PVC futures price has fluctuated due to factors such as supply - demand relationships, macro - economic sentiment, and cost changes. The spot price has been weakening [61][62]. Supply - This week, the overall operating load rate of PVC powder was 73.74%, a 1.4 - percentage - point decrease from last week. Among them, the operating load rate of calcium - carbide - based PVC powder was 71.65%, a 3.08 - percentage - point decrease, and the operating load rate of ethylene - based PVC powder was 78.56%, a 2.46 - percentage - point increase. Many enterprises are in long - term, current, or planned maintenance, which affects the supply of PVC [83][85]. Demand - The two major downstream sectors of PVC, profiles and pipes, are facing pressure from both demand and industry competition, and the industry's contribution is difficult to improve. The real - estate sector, with the goal of "reducing inventory and stabilizing prices," continues to have a negative impact on demand. According to sample data, downstream orders are significantly lower than the average of the past five years, and both raw material and finished - product inventories are at high levels [93]. Inventory - PVC inventory has been continuously increasing, and the total inventory is at the highest level in recent years compared to the same period [101]. Export and Import - In September 2025, the PVC import volume was 14,400 tons, with an average import price of $736 per ton, and the cumulative import from January to September was 175,500 tons. The single - month import volume increased by 16.08% month - on - month and 7.73% year - on - year, with a cumulative year - on - year increase of 0.76%. The export volume in September was 346,400 tons, with an average export price of $612 per ton, and the cumulative export from January to September was 2.9216 million tons. The single - month export volume increased by 21.945% month - on - month and 24.53% year - on - year, with a cumulative year - on - year increase of 50.63% [119].