烧碱：偏弱震荡，PVC：偏弱运行

1. Report Industry Investment Rating - Not provided in the given content 2. Core Views of the Report - Both caustic soda and PVC face oversupply, high inventory, and low - profit situations. In late 2025, production cuts were made, but the overall supply - side reduction was weak due to the winter maintenance off - season. They will face significant inventory accumulation during the Spring Festival, and high - level inventory needs to be continuously digested in the first half of 2026 [155]. - Although domestic chlor - alkali production capacity is in a loss situation, large - scale capacity elimination is difficult. Low - profit production cuts of PVC and caustic soda can drive rapid profit repair, but it is not sustainable for more than 3 months [155]. - On the demand side, caustic soda is affected by the negative feedback from low alumina profits, while PVC faces the weak real estate demand pattern [155]. - In terms of valuation, both have many supporting factors in 2026. Caustic soda has high volatility, with an annual volatility of over 30% in recent years, and its forward futures price between 2150 - 2300 has long - allocation value. PVC has large profit losses, but the forward premium restricts the market from trading low - valuation factors [155]. - Overall, in 2026, caustic soda and PVC will mainly show a wide - range volatile market. Affected by maintenance expectations, differential electricity prices, and anti - involution sentiment, the continuous decline space is limited. But it is also difficult to rise continuously before the fundamental situation improves substantially. Caustic soda has stronger price elasticity than PVC [155]. 3. Summary According to Relevant Catalogs 3.1 Caustic Soda 3.1.1 Price and Spread - Short - term caustic soda may be weak. The 03 basis and the 3 - 5 month spread are weakening [13]. - The export market has support but is also undergoing structural adjustment. In 2025, the cumulative export volume from January to November was 3.74 million tons, a year - on - year increase of 36.7%. The Northeast Asian FOB price has declined to about $350 per dry ton, and the Southeast Asian CIF price is $400 per dry ton, a decrease of $20 per dry ton compared to December 23 [17][20]. - The Shandong - Guangdong regional arbitrage space and the flake - liquid caustic soda spread are acceptable. The flake - liquid caustic soda spread is rising, which is beneficial for caustic soda, while the 50 - 32 caustic soda spread is falling, which is negative for caustic soda [27][30]. 3.1.2 Supply - The market structure shows rising production and inventory. The average capacity utilization rate of Chinese caustic soda sample enterprises with a capacity of 200,000 tons or more is 86.8%, a week - on - week increase of 0.4%. The factory inventory of fixed liquid caustic soda sample enterprises is 495,200 tons (wet ton), a week - on - week increase of 1.96% and a year - on - year increase of 76.03% [38][40]. - There are few caustic soda maintenance plans in January 2026. In 2026, caustic soda will continue to see new production, with a capacity growth rate of over 3%, and the planned and under - construction production capacity to be put into operation totals 2.94 million tons [44][46]. - In January 2026, the large - scale industrial electricity price in Shandong Province decreased, and the cost support for caustic soda was weak. Liquid chlorine did not provide significant subsidies, and the cost support for caustic soda was limited [47][51]. 3.1.3 Demand - In 2025, the alumina production capacity expanded significantly, with an expected new capacity of 9.5 million tons. In 2026, the new production in the first half of the year is relatively concentrated, and the annual new capacity may reach 13.9 million tons. However, the alumina industry is currently operating at a high level with rising inventory and losses, and there is an expectation of production cuts in the future [73][75]. - The paper pulp industry is in a demand off - season, with continuous compression of terminal profits, but new pulp production capacity is continuously being put into operation. The finished paper industry has stable operation. The viscose staple fiber industry has rising operation, while the printing and dyeing industry has declining operation. The water treatment industry and the ternary precursor industry have declining production [88][94]. 3.2 PVC 3.2.1 Price and Spread - PVC may be weak in the short term. The main contract basis is oscillating and strengthening [113]. - Short - term PVC may be weak. The main contract basis is oscillating and strengthening. The short - term PVC market may face pressure due to factors such as high inventory and weak demand. The strengthening of the main contract basis may reflect the current market's short - term supply - demand relationship [113]. 3.2.2 Supply and Demand - PVC production enterprises' capacity utilization rate is 79.67%, a week - on - week increase of 1.03% and a year - on - year decrease of 1.33%. There are fewer PVC maintenance plans in January 2026. In 2026, except for Jiahua's capacity release, there is no new capacity [120][123]. - The comprehensive profit of chlor - alkali plants has rebounded. PVC production enterprises are accumulating inventory, and social inventory is at a high level and continues to accumulate. The real estate terminal demand has not shown obvious improvement, the overall downstream PVC operation has decreased month - on - month, and the PVC export expectation has weakened. Since April 1, 2026, the VAT export tax rebate for PVC and other products has been cancelled, which will increase the competition pressure in the future [127][131][146].