MP3/4 shell 1)aluminum shell for MP3/4 2)attractive &good quality 3)various of surface treatment specification:1. aluminum alloy: 6063, 6060, 6061,or according to customer's requirement.2.Machined by lathe, milling machine, saw, punching machine, bending machine, precise CNC machining.3.anodized silver, anodized champagne, anodized bronze, anodized black, powder coated, electrophoresis,etc.4. ...