Sandwich Panels, Steel Structure Buildings, Clean Room manufacturer / supplier in China, offering Construction Building Material Insulated SIP PU/PIR/PUR/Puf/Polyurethane/Polyisocyanurate Foam Sandwich Board for Cooling Room/Cold Storage/Freezer Wall Ceiling, Light Weight Steel Structure Frame Hangar Garage, Polystyrene EPS/PIR/PUR Sandwich Roofing Covering Sandwich Exterior and Interior Panel for Storage and so on.