Purification plate/sandwich panel Specifications1.Waterproof,fireproof,insulation 2.Usage:Cold room,Warehouse,Workshop,Light steel ... , the box packing3). Light steel housing, the original building sandwich room4). Moving room5). Various purification room. Air conditioning room, ... equivalent to 1/30 of the brick wall2. Heat insulation, attract and good seal performance,3. Construction is convenient ...