Caustic Soda generally refers to sodium hydroxide. Sodium hydroxide, inorganic compound, chemical formula NaOH, also known as caustic soda, Sodium hydroxide, solid alkali and soda caustic .

In 2021, the national caustic soda output continued to grow, and the national caustic soda output has increased steadily in recent years. In December 2021, the national output of caustic soda was 3.38 million tons, a year-on-year decrease of 1.2%. In 2021, the output of caustic soda in China was 38.91 million tons, with a year-on-year increase of 5.2%, maintaining a stable growth.