China air gun spraying effect sometimes appears on the surface of the coated object bubbles, burrs, burrs, wave marks, etc., after use, it is not easy to clean and cause the accumulation of paint; when spraying, the dead angle of the workpiece can not be sprayed; Need to be strengthened, the speed can be accelerated in terms of efficiency, the degree of cost control is not high, and the warranty time of internal structural parts is not long.