... polyurethane Color: white-grey ,sea blue,red, silver, polyurethane sandwich panel (PU)Material: steel and polyurethane Color: red, silver, blue ... . 1.Structure: Upper and lower metal exterior sheets sandwich panel with the PU foamed.The exterior metal sheet can ... Application range: Factory, ware-house, public stadium and gymnasium,villa,cold storage and other building.Product PU PANELThe covering width ...