... Mold Design,Quick Sample 4) OEM OK Brushed Aluminum Cover for Car Power Amplifier Specification:Material: Alluminum Alloy: 1x,2x ... SizeSurface Treatment: Anodized, Power Coating, Sandblasting, Polishing, Grinding, Painting, Screen printing, Tumbling , Electroplating, Fabrication: Sawing, Deburing, Milling, Drilling, ... understanding of customer requirement./ Polished Aluminum Cover for Car Amplifier