Aluminum-plastic composite plate should be set where the edge of ribs
Fill the structural glue between the square tube and the partially folded aluminum plate, used to support the surface wind pressure strength of the cell
Side ribs are close to the position of the four folding side, ribs of the material is usually aluminum or zinc square tube,
Aluminum-plastic composite panel after the edge of the ribs is set: fold after the aluminum plate to become a box plate,
