Activated Calcium Carbonate CaCO3:98% super whiteness:95% size:100-2500mesh used in paint,caoting,rubber,plastics Activated Heavy Calcium CarbonateCaCO3 powder, Calcium Carbonatewhiteness: 93-97%purity ... , 600mesh, 800mesh, 1000mesh, 1250mesh, 1500mesh, 2000mesh, 2500mesh, 3000meshWe are one of Chinese manufacturer. We supply you heavy calcium carbonate and light calcium carbonate, including active ...