Inorganic alkali is the most productive product in the basic chemical industry and is a basic industrial raw material with a wide range of uses. Its production and use mark the extent to which a country's industry is developed. Inorganic alkali is an industry in which the scale of enterprises and products in China's chemical industry is relatively complete and the most qualified to form socialized large-scale production. Inorganic alkalis include soda ash and caustic soda. They are closely related to heavy industry such as iron and steel, non-ferrous metal smelting, light industry sectors such as papermaking, glass, textiles, food, scientific and cultural undertakings, and people's lives. They have a prominent position in the national economy.