1,amplifier plate, amplifer panel . 2,extrusion aluminium CNC machining ... , aluminium alloy panel, metal panel for electric appliance,car amplifier plate, amplifer panel, aluminium amplifer panel.aluminium hardware. Material ... A 6061Aluminium alloy composition: AlloySiFeCuMnMgCrZnTiOtherRemain60610.4-0.80.70.15-0.40.150.8-1.20.04-0.350.25 ... are warmly welcome to visit our factory. car amplifier plate