1.EPS PU rockwool,metal. 2. cheap, economical building material 3.used for dorm, office, warehouse, ... can be blue, red, white or customized;) Material of corePolystyrene(EPS) polyurethane(PU), rockwoolAdvantages1. Light weight,Very easy to install, disassemble ... insulation material, and other industrial and civil buildings. cheap EPS PU rockwool color coated steel plate Sandwich Panel colourbond for ...