Color-coated steel sandwich plate free and process currently used are more types are: Color polyurethane composite board scaffold rock wool insulation board, color steel polystyrene foam roof insulation wool board complex, polyethylene materials, phenolic foam foam plastic, three types of materials, straw board inorganic fiber sheet glass wool panels. Plywood, composite panels Caigangyanmian. Rockwool rockwool sandwich board sandwich is made from raw materials. Rock wool sandwich core materials give full play to the unique properties of wool wall insulation rock wool board, fire protection, thermal insulation, acoustic insulation and other aspects have a significant effect.