... Whiteness:93-95% Size:5 micron Application: paint,caoting,rubber,plastics Active Heavy Calcium Carbonate for paintCaCO3 powder, Calcium ... Carbonate is used much for producing rubber products because it makes easy to process rubber. It is also useful for ... ;Chemical shoes, Electric cable, Tire, Belt, Hose, Sponge, Rubber paste, Rubber glue.3.PAINTTo add the Heavy Calcium Carbonate when producing ...