The major categories are mainly divided into manual polishing machines and automatic polishing machines. The type of manual polishing machine is relatively simple, mainly composed of a motor and a single shaft with a polishing wheel for polishing. Because the automatic polishing machine is more professional in seeking efficiency, there will be different machines for different products, resulting in many types of automatic polishing machines. For example: the surface polishing treatment of hardware products, flat products, round tubes, square tubes, etc. can be the effect of the metal surface to the mirror surface. It is a processing equipment that can achieve the brightest effect in surface treatment.