It can rotate unidirectionally; polyurethane universal brake wheel can move freely; handle, pedal adjustment can be locked in any position; support rod can adjust the height indefinitely; it can fix machine cover, door and tail cover; spraying paint can be completed on the spraying rack on both sides at the same time, and then enter the baking room to finish painting at the same time, effectively saving the use of the baking room. Rate and Energy Conservation