U-shaped locking sun plate, the whole set of PC plate production line of Italy UINION was introduced, 100% of imported raw materials were used, modern ERP management method was introduced, high efficiency production of high quality plates, engineering plastics with excellent physical, mechanical, electrical and thermal properties were introduced. It is widely used in public facilities such as large municipal building, shopping mall lighting roof, lighting canopy, pedestrian corridor ceiling, highway sound barrier, market wall roof, agricultural greenhouse, factory roof, etc. It is the most suitable sunlight roof material in the world.