Sodium chloride is used in the manufacture of soda ash and caustic soda and other chemical raw materials, used in ore smelting, salting in the food industry and fishery, and can also be used as a raw material for seasonings and refined Chemicalbook salt, used as electrolyte and acid-base balance adjuster , salting-out agent and diluent for tablets and capsules, etc., used as analytical reagents, and also used in the preparation of biological culture medium.