... 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: 10-2.5%CACO3: 98 ...