... Design,Quick Sample 4) OEM OK Brushed Aluminum Cover for Car Power Amplifier Specification:Material: Alluminum Alloy: 1x,2x, 3x, ... : Aluminum Panel/ Plate/ Covers used for all kinds of Car or Home Power Amplifier/Audio Player/ Disc Player / Audio CD ... , extruding, surface treatment, welding and assembling, and a "A Package Plan Solusion" from design, drawing, development, production and delivery, ...