Upper and lower surfaces: galvanized color steel composite rock wool board manufacturers, the thickness of 0.4-0.8mm. According to the specific requirements of customers, but also can color galvanized steel or galvanized steel. After the first steel roll forming machine composite rock wool factory. Widely used in steel plants, simple activities room roof, wall, ceiling and air clean room partition. Rock wool sandwich panel, generally can be customized according to customer requests rock wool sandwich panel series sandwich panel fire resistance is the most superior.