... nature and rheological property. Applications and Usages: Our heavy calcium carbonate widely uses in papermaking,coating,plastic,rubber,cosmetics and ... nature and rheological property. Applications and Usages: Our heavy calcium carbonate widely uses in papermaking,coating,plastic,rubber,cosmetics and ... so on HYGCC-3000A Physical analysis:1,Whiteness:≥96%2,Average grain diameter(um):1.8~2.2 ...