... sound insulation, shock absorb, smooth Alucobest COPPER DOOR PLATE AND STRIPCU-ALU(GS) Plate and Strip: with heat insulation, sound insulation, ... smooth surface and high strength.Used for metal roofs,gutter,down pipe,ceiling,blinds,wall doors and door sets,waistline,baseboard ... ,elevator doors,cab,cabinets and so on.Customers also can ...