Recently, the caustic soda market in Shanxi has been declined. The load of caustic soda facilities in the province has risen, the output has increased, and the market supply is sufficient. The load of the downstream alumina facilities is stable, and the enterprises purchase caustic soda on demand. With the price reduction of caustic soda to alumina enterprises in the surrounding area, the ex-factory price of local caustic soda showed a downward trend, with a range of 260 yuan/ton (dry-based price).