... 2.used as filling compound for various plastic, natural/synthetic rubber produc Heavy& Ground CaCo3 which can reduce cost of the ... , ml/g ≥---Top Cut(D98), μm ≤35Average Grain(D50), μm ≤16Fe, % ≤0.1Mn, % ≤0.08Residues: 325μm, % ≤ 125μm, % ≤0 0.6Whiteness(R457), % ≥ ... .Main Applicantion:It is widely used in paper-making,plastic,rubber,paint,building material,etc. Mesh 600 Natural Heavy Calcium Carbonate ...