Plywood, also known as multilayer board, is a kind of technology wood. It is made of a relatively thin wooden veneer. All of the adjacent grain veneer are perpendicular to each other, to ensure that the slab has better strength, usually plywood is odd layer, there are three commonly used plywood, plywood etc..
The symmetrical structure can reduce the variation of the plate, and the grain direction of the two table plates is consistent. The veneer is coated with a high strength adhesive and pressed at a certain temperature and pressure.
Usually with phenolic resin, urea formaldehyde resin and melamine adhesive. Plywood can be used instead of boards, because plywood has a strong resistance to rupture, shrinkage, distortion and high strength. And plywood and solid wood compared to have larger size range, higher utilization rate and lower cost, so in building, decoration, furniture, shipbuilding and so on, there are many applications.