1.fireproof 2.sound insulation 3.heat insulation This rockwool sandwich panel is one of the best sellers in our company. Comparing with other panels, the most ouestanding advantages is its fireproof. Beside its fireproof, it also has other characteristics, such as windproof, heat insulation, sound insulation and so on. This product is used on villa, prefabricated house, toliet, movable fence, and ...