1,amplifier plate, amplifer panel . 2,extrusion aluminium CNC machining 3,ISO9001 certified 4 ... door bell panel, aluminium alloy panel, metal panel for electric appliance,car amplifier plate, amplifer panel, aluminium amplifer panel.aluminium hardware. ... parts, aluminium alloy section, High precision parts.Extrusion die mouldAluminium extrusion die mould, porthole die, Shenzhen Jinrui Aluminium ...