... Carbonate in the rubber or synthetic rubber, can increase the volume of the rubber products, save costly natural rubber or synthetic rubber, reduce costs. Our ... , high bending strength, strong tear-resistant. Specification Calcium Carbonate For Rubber ItemsWhiteWaterOil AbsorptionCaO3Fe2O3Acid-insoluble1250 mesh≥96≤0.3%30%≥98.5 ...