March 20th — During this period (March 13th–19th, 2026), the operating rate of bromine enterprises was 35.00%, an increase of 2.31% compared to the previous week. Chempricehub's analysis of caustic soda indicates a bullish-bearish score of 1.5. The 2.31% rise in the operating rate of bromine enterprises to 35.00% suggests an increase in bromine production activities, which may enhance the demand for caustic soda as a raw material, thereby benefiting the spot price of caustic soda. Combined with caustic soda futures data, such as the closing price of the SH2605 contract at 2,544 yuan per ton (an increase of 38.00 yuan) and active trading volume, it reflects positive market expectations and supports the upward trend in futures prices.