... made up of foam, polyurethane, and mineral wool, and the top board, back board are steel plate.2 FeaturesIt gathers ... roof and wall industrial like workshops, warehouses, exhibition, gymnasium, the cold storage, and the purification workshop etc.4 Advantages Light-weight: per cubic ... meter can bear 6-14 kg. Good fireproof performance: all the materials' standard achieved grade GB 8624 B1. Good heat- ...