Adopting the structural principle of Y-shape roof, the bottom side is designed in the shape of a rough column, as the main load-bearing and lateral force-resisting part, it bears a large vertical and horizontal load, which greatly reduces the instability caused by the impact of external forces. The concave section on the back is embedded with a new design of light box to skillfully create the wing shape, which is extremely imaginative and visually beautiful. The whole machine adopts special technology of powder coating, which integrates protection, decoration, wear-resisting and solvent-resisting.