... 1250 etc 3.whiteness:93min 4.Used for plastic,rubber,chemical,papermaking etc. Limestone Powder and lump for PVC Application: 200mesh: as the ... 350-400mesh:gusset plate,chemical,pipe 400-600mesh:toothpaste and soap 800mesh:rubber,pvc,plastic,electric cable 1250mesh:pvc,PE,coating,papermaking Properties ...