Quanfu Plug-pattern sheet is a flat polycarbonate hollow board with a multi-layer structure design to meet the strength requirements of building facade installation. On the side of each sheet, the self-locking style of concave-convex buckles is used for splicing, and the appearance is beautiful; a certain space is reserved at the bottom of the concave-convex buckle, and T-shaped aluminum fasteners are inserted. Fasteners are fixed to the bottom steel structure, which is convenient for installation...