... bell panel, aluminium alloy panel, metal panel for electric appliance,car amplifier plate, amplifer panel, aluminium amplifer panel.aluminium hardware. Material; ... / stamping, milling, taping, CNC machining, polishing.)6,surface treatment (wire drawing, deburring, anodizing, powder coating, baking varnish,silkprint.) 7,packing ... . You are warmly welcome to visit our factory. car amplifier plate