... Good -quality color steel or aluminum foil board, filled with high-density polyurethane (The density can reach 40kg/m3 ... door, roof, wall, anti-fire, sound absorbing etc, with good performance on energy conservation, environmental protection and construction. We ... less than 0.118(Sec)Self-distinguishing: less than 5Temperature Range: -200+150 Specs Factory, warehouse, large-span roof panel, temporary ...