China high quality poplar packing grade plywood 3-25mm

Packaging board according to different grades can be divided into board core, a molding panel (based on the core of the board with a peach core, miscellaneous wood and other different surface skin of a molding plywood), paste panel. Board heart through dozen putty child and so on a few procedures affixed with different grade pattern of dough. Among them belong to stick panel grade is highest.