Calcium carbonate is a chemical compound with the chemical formula CaCO3. It is a common substance found in rock in all parts of the world. Calcium carbonate is the active ingredient in agricultural lime, and is usually the principal cause of hard water. It is commonly used medicinally as a calcium supplement or as an antacid.

Calcium carbonate mill powder can be widely used in the following industries after depth processing by grinding machines:
1. less than 200 mesh: can be used for a variety of feed additive.
2.250 mesh to 300 mesh: used in plastic factory, rubber factory, paint factory, waterproof materials plant for raw materials and interior and exterior stucco. The whiteness of more than 85 degrees.
3.350 mesh to 400 mesh: used in the manufacture of gusset plate, water pipe, chemical. The whiteness of 93 degrees of more.
4.400 mesh to 600 mesh: Can be used in toothpaste paste, soap. The whiteness of 94 degrees or more.
5.800 mesh: Used in rubber, plastic, cable, PVC whiteness of 94 degrees or more.
6.1250 mesh: pvc, PE, paint, paint grade products, paper base coat, paper surface coating, the whiteness of 95 degrees or more. With high purity, high whiteness, non-toxic, odorless, fine oil is low, the lower hardness.