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