soft materyal
Calcite, dolomit, Kaolin, Barite, kuwarts, mika, Zircon Sand, wollastonite, Coal Powder, Magaang Calcium Carbonate, Mica, Bauxite, Attapulgite, Brucite, Bentonite, Garnet, Magnesite, Andalusite, pyrophyllite, Potassium Feldspar, diopside, Rectorite, diatomite , Gypsum, Pearlite etc.
Hard materyal
Karborund, Boron karbid, White Corundum, Zirconia, Seriyum oksido, Mataas na Temperatura Alumina, Silicon Nitride, Boron Nnitride, Brown Fused Alumina etc.
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