Cleanup work surface - can be used on metal corrosion layer, heat treatment salts and residual oxide layer on the surface of the rolling surface of the oxide layer, the surface of the oxide layer forging, welding surface of the oxide layer, sand casting surface and oxidation residual dirt floor, machine surface and tiny burrs, etc. old mechanical surface treatment to remove surface adhesion layer, revealing the true nature of the substrate surface cleaning quality can be achieved Sa3 level. 2.2 before the coated surface of the workpiece pretreatment - used for various plating process, plating process, coating process and the bonding process of the pre-treatment step to obtain an active surface to improve the coating between the coating and the adhesive member adhesion. 2.3 change the physical and mechanical properties of the workpiece - can alter the surface state of stress, improve lubrication conditions with even pieces, even pieces during exercise reduces noise, so that the surface hardening to improve the wear resistance of components and fatigue strength. Decorated processing 2.4 workpiece surface - you can change the surface roughness Ra values ??produce or diffuse matt surface, in order to reach the finishing processing purposes.