Recently, the trading volume of caustic soda market in Guizhou has declined. At present, there are no caustic soda production enterprises in the province, and downstream purchases need to be allocated from other provinces. Local alumina enterprises mainly purchase 99% flake alkali, with liquid alkali as a supplement. The flake alkali in the region is mainly supplied by enterprises in the northwest, while the liquid alkali is mostly provided by enterprises in Sichuan and Chongqing. The facility load of caustic soda production areas is stable, and the output remains stable. The export goods is at a reasonable level. The downstream facility load in the province is normal, and the purchase of caustic soda is according to demand. With the downward adjustment of ex-factory prices of the main production areas outside the province, the trading volume of caustic soda market in Guizhou has declined, with a range of 50-100 yuan per ton (100%).