Calcium carbonate from 325 mesh to 5000 mesh, can be used in plastic, rubber, paper and paint industries. Calcium carbonate can be used in plastic, rubber, paper and paint industries. It has the characters of low price, high purity, difficult to have chemical reaction, good heat resistance, low oil absorption and nontoxic. specifications: Mesh: from 325 mesh to 5000 meshwhiteness: 94-99%D50: 10-2 ...