Polyurethane plywood consists of two layer waterproof color-coated plates or other metal as panel, among injection of flame retardant polyurethane hard foam composite ,which is considered as one of the best heat insulation materials in the world . It can be used in large industrial plants, warehouse, exhibition hall, gymnasium.the cold storage, Purification workshopand so on .as building roof and wall insulation.which integrates heat preservation , heat insulation, bearing , waterproof ,wonderful colors ,attractive appearance

High bearing capacity: high strength ,big stiffness ,can be used as both carrying structure and building envelope

Good fireproof performance:: test via national fireproof construction material quality supervision and inspection center, the various bid to GB8624B1 level.
 the length of the sandwich board according to design requirements and transportation installation conditions determined. For different roof load and Lin distance can choose different sandwich board thickness.