First, according to the occasion cutting disc use different choices. Cut pieces from the use of cutting approach stresses can be divided into classes and polished classes. Most of the cutting machine with fixed mobile, the power of the machine has power (> 5.5KW) and low power (<3KW) of the points. Cutting speed will have high-speed cutting (> 80m / s) and normal cutting two kinds. Another variety of cutting the material cut, such as stainless steel, titanium, ordinary steel, viscosity metals, high carbon steel, non-metallic. Different occasions on the cutting disc performance requirements are different, so that a reasonable choice cutting disc is essential. We want to use the occasion to according to their own choice of a good cutting discs, which can increase the safety factor, improve work efficiency, reduce our cost.