Report Overview - Research Variety: Caustic Soda - Report Cycle: Daily - Date: October 29, 2025 [1] 1. Report Industry Investment Rating No relevant content provided. 2. Report's Core View - The caustic soda futures price oscillated and consolidated today, while the spot price remained weakly stable. Most chlor-alkali enterprises are operating at normal loads, and the demand side remains lukewarm. The enthusiasm of downstream operators and traders to enter the market is not high. It is expected that the caustic soda futures market may maintain a weakly oscillating pattern in the short term. Attention should be paid to the purchasing situation of major downstream industries and macro sentiment in the future [14] 3. Summary by Directory 3.1 Futures Market 3.1.1 Contract Quotes - On October 29, 2025, the main caustic soda contract, Caustic Soda 2601, maintained an oscillating trend. The closing price was 2,361 yuan/ton, a decrease of 5 yuan/ton or 0.21% from the previous trading day's settlement price. The trading volume increased by 34,000 lots compared to the previous day, with a total trading volume of 302,000 lots. The open interest was 134,000 lots, an increase of 1,952 lots from the previous day [2] 3.1.2 Variety Prices - Today, 12 caustic soda futures contracts oscillated and consolidated. The total open interest of the variety was 212,800 lots, an increase of 8,561 lots from the previous trading day. Among them, the open interest of the active contract, Caustic Soda 2601, increased by 1,952 lots, and the capital inflow was 34.8 million yuan [5] 3.1.3 Related Quotes - Today, the put options of the main caustic soda contract SH601 performed stronger than the call options, with overall limited fluctuations [8] 3.2 Spot Market - The spot price of 32% caustic soda in Shandong Province remained weak today. Most enterprises' inventories increased at the end of the month, and the sales were poor. The mainstream transaction price of 32% ion-exchange membrane caustic soda in southwestern Shandong was 790 - 830 yuan/ton, 750 - 810 yuan/ton in central and eastern Shandong, and 790 - 860 yuan/ton in northern Shandong. The mainstream transaction price of 50% ion-exchange membrane caustic soda in central and eastern Shandong was 1,210 - 1,330 yuan/ton [10] 3.3 Influencing Factors 3.3.1 Industry News - The prices of liquid caustic soda and liquid chlorine in Shandong Province were stable today, and the chlor-alkali profit was 583 yuan/ton [12] 3.3.2 Technical Analysis - Today, the main caustic soda futures contract closed with a small positive line, maintaining a low-level oscillation. The price was suppressed by the 10-day moving average [12]