... :High hardness materials: carborundum, various corundum, boron carbide, diamond, etc.;Non-metallic mineral: quartz, graphite, kaolin, calcium carbon, mica, etc.;Chemical engineering: ... etc.; Metallic materials,aluminite powder, magnesium powder, zinc powder, tin powder etc.;Other materials: ceramic material, refractory material. Electronic material, magnetic material, rare earth material, phosphor ...