... , fireproof, waterproof, it is easily installed.- both surface of panel with steel sheet:- PU density: 36~40 kg/m3 ;40-42 ... of panel is usually used in the small installation construction. With the cam locks in the panels make it easy to ... house, clean room, garage door, roof,wall, anti-fire,sound abosrbing etc. with good performance on erergy conservation. Environmental protection and constrution ...