... EPS PU rockwool,metal. 2. cheap, economical building material 3.used for dorm, office, warehouse, fence, factory ... color can be blue, red, white or customized;) Material of corePolystyrene(EPS) polyurethane(PU), rockwoolAdvantages1. Light weight, ... prefabricated houses, container houses, steel structure insulation material, and other industrial and civil buildings. cheap EPS PU rockwool color coated ...