Cold Storage Room, Cold Room Door, Condensing Unit manufacturer / supplier in China, offering CE Certified 75mm 100mm 120mm 150mm Clean Room Flat Fireproof Rock Wool Sandwich Panel, 75mm/100mm/120mm/150mm Interior Wall Sound Insulation and Heat Preservation Composite Polyurethane PIR/PUR/PU Sandwich Panels for Cold Room, Insulated Polyurethane PU Sandwich Panel Wall Exterior for Cold Room Warehouse and so on.