On July 19, the caustic soda futures SH2405 contract opened at 2553 yuan, with a settlement price of 2547 yuan, down 6 yuan to close at 2558 yuan, with a daily trading volume of 45710 lots, with accumulated funds of 710 million yuan, and capital inflows of 53.46 million yuan. The domestic caustic soda market has a strong wait-and-see atmosphere, stable prices, average trading in the liquid caustic soda market, and stable operation of the flake caustic soda market. In terms of futures, the SH2409 contract fluctuated downward, fluctuating by 2,534 - 2,561 yuan within the day, and the number of positions increased. The domestic caustic soda index was flat at 2,807.24. The market expects that short-term caustic soda prices will continue to adjust flexibly, and futures will operate in a weak position to test the low range.