1,amplifier plate, amplifer panel . 2,extrusion aluminium CNC machining 3,ISO9001 certified 4, ... bell panel, aluminium alloy panel, metal panel for electric appliance,car amplifier plate, amplifer panel, aluminium amplifer panel.aluminium hardware. Material; ... flow1,extrusion mould designing - Opening mould - Die trial 2,first article assurance 3,extrudrd aluminium mass production 4,cutting5 ...