Soft material
Calcite, dolomite, Kaolin, Barite, Quartz, talc, Zircon Sand, Wollastonite, Coal Powder, Khanyisa calcium carbonate, Mica, bauxite, Attapulgite, Brucite, Bentonite, Garnet, Magnesite, Andalusite, Pyrophyllite, potassium Feldspar, Diopside, Rectorite, Diatomite , Gypsum, Pearlite njll
Hard material
Carborundum, boron Carbide, White Corundum, zirconia, Cerium oxide, lokushisa High Alumina, Silicon Nitride, boron Nnitride, Brown tho Alumina njll
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