White fused alumina: white, luster, high purity, chemical stability. Has the very good insulation. The hardness of 2200-2300 km/was. Can do consolidation abrasive and the coat with abrasive, wet or dry spray powder, ultra precision grinding and making advanced wear-resisting material, etc. Suitable for processing hardened steel, alloy steel, high speed, such as identity of hardness is stronger, the compressive strength of the larger materials. Also for piezoelectric crystal, semiconductor, monocrystalline silicon and polycrystalline silicon and other ground polishing, also can be used as a catalyst in in