On July 16, the caustic soda futures SH2405 contract opened at 2558, with a settlement price of 2551, down 25 points to close at 2572. The daily trading volume was 85292 lots, with a deposit of 658 million yuan, and a capital inflow of 8.23 million yuan. The domestic caustic soda market rose sporadically, and the trading atmosphere was general. Due to the increase in purchase prices of downstream alumina companies in Shandong, the center of gravity of liquid caustic soda prices shifted upward, and markets in other regions were mostly stable and wait-and-see. The alkali market is stable and transactions are average. In terms of futures, the SH2409 contract showed a "U"-shaped trend and rebounded after reaching a new low. Technical indicators showed that the futures price was still tilted downward, and the market was concerned about the low range test.