Main uses: 1. Used as a refrigerant and also used in food processing, pharmaceuticals, etc. 2. It is used as a calcium strengthener, chelating agent, curing agent and refrigerant for freezing in the food industry。 3. Feed calcium supplementation. 4. As a coagulant, our country stipulates that it can be used in appropriate quantities in soybean products according to production needs. 5. Used as a refrigerant (such as frozen brine for freezers, frozen brine for ice and popsicle making), antifreeze, and automobiles Antifreeze, fire extinguishing agent. Flame retardant for melting ice and snow, finishing and finishing of cotton fabrics. Used as an adhesive and wood preservative. It is the raw material for the manufacture of anhydrous calcium chloride. It is used in wall painting and plastering operations to increase the coagulation capacity. Rubber production is used as a coagulant. Mixed starch paste is used as a gluing agent. It is also used in non-ferrous metal smelting. Used as a medicine. 6. Oxygen and sulfur absorbents. Food protectants. Sizing agent. Water purifier. Antifreeze.