... Application: paint,caoting,rubber,plastics Active Heavy Calcium Carbonate for paintCaCO3 powder, Calcium Carbonatewhiteness: 93-97%purity: 92-98 ... We supply you heavy calcium carbonate and light calcium carbonate, including active and inactive.The Heavy Calcium Carbonate is almost always used ... on the ground, Chalk, Colors, Crayon, Pastel and Plastic Eraser.In this way, the Heavy Calcium Carbonate is ...