... / biologic/ electronic), ship-craft, food-stuff, air-condition, factory, boiler room, floors, activity room, factory, refrigeration house, facility room, office ... building, roof of large scale steel structure, wall surface, indoor/ outdoor wall decoration and so on.Characteristics:Light weightHigh strengthEasy and ... of panelscustomized Polyurethane/Polystyrene/ Rock wool Sandwich roof wall Board