4、Selection of Binder：
     Diamond Grinding-wheels in Resinoid binder suit to the half-precision grinding, precision grinding, blade-grinding, polishing sintered-carbide, semi-conductor and magnetic materials.
     Diamond Grinding wheels in Metallic binder suit to the cutting, coarseness and precision or mould grinding and electrolyze of sintered-carbide in the fields of nonmetal materials for instance optics glass, ceram, bijou etc.
     CBN Grinding wheels in Resinoid binder suit to process materials of high-speed steel, tool steel, non-corrosive steel and ingot etc.

Binder	Code of the Original criterion of Industry Department	International Code
Resinoid binder	S	D
Metallic binder	Q	M