... compound for various plastic, natural/synthetic rubber produc Heavy& Ground CaCo3 which can reduce cost of the ... excellent dispersion.2.Technical Parameter:Name & Parameter Model SpecificationItemNatural Heavy Calcium CarbonateSN-1063CaCO3 content (Dry basis), % ≥94PH(10 ... widely used in paper-making,plastic,rubber,paint,building material,etc. Mesh 600 Natural Heavy Calcium Carbonate in rubber industry ...