Electric Sliding Door, Manual Sliding Door, Clean Door manufacturer / supplier in China, offering ISO, SGS Approved 120mm Color Steel Pur Sandwich Panel for Cool Room/ Cold Room/ Freezer, ISO, SGS Approved 250mm Color Steel Pur Sandwich Panel for Cool Room/ Cold Room/ Freezer, ISO, SGS Approved 100mm Color Steel Pur Sandwich (Fast-Fit) Panel for Cool Room/ Cold Room/ Freezer and so on.