1. Good polishing effects
2. Quality durability
3. Lower price
4. 4-years manufacture experience

Diamond is the hardest known material. Due to its high were-resistance, it has become the most frequently used industrial were-resistance material. Cutting and grinding stones, glass and other hard materials is only part of its early application. Diamond has one limit in its application, that is, it can react with iron at high temperature (lead to reversion of graphite and cause high wear speed). Comparing with other general abrasives, like aluminum oxide and Si-C compound, it is not economical, it is of higher cost. Diamond if made from the carbon. High temperature/high pressure or high temperature low pressure setting (like CVD) is the ordinary combination of diamond.CBN will not have this reaction. Although its hardness is only half that of diamond, it is harder than general abrasives, so it is very suitable to be used in the ferrous work-piece as high property abrasives. Concentration means the weight of grain carat in unit volume of connecting material. For instance, a defined Concentration is 0.44 carat grain per cubic centimeter in the connecting material.Hardness of combination is not hardness of grinding wheel grain. Grinding wheel with high hardness has strong wear-resistance, but grinding wheel with low hardness has weak wear-resistance, so the grinding force is so small. SDC: THE METAL-clad composed by thick nickel or copper layer. It can reach 60% of total weight of grain. These clad grains are often applied in the resin-connected tools, like grinding wheel. The function of cladding is to improve the wear resistance of connecting part, and help emit the heat produced during grinding, so the property of tool is improved.