... skin : sythetic resin with copper coating Suitable for copper doors and security Copper door panel,copper door plate , door skin OT-18097 Material: ... sythetic resin + copper coating Standard size:1800 x590 mm, Remark: The image ... custom designed. Packing: 2 pcs/ ctn, Carton packing Usage: Copper door core, security door core Adv: Fireproof, waterproof,soundproof