1.CaCO3 contents: 98%min 2.Size(mesh): 325 1250 etc 3.whiteness:93min 4.Used for plastic, ... Powder and lump, additive in the feed Application: 200mesh: as the additive in the feed 250-300mesh: whitewash the wall,plastic,rubber ... .4 F-0172, Limestone Powder and Lump,additive in the feed