Protective Case for Iphone 4 1.Material: Aluminum 1. Protect the iphone perfectly 2. Good quality 3. OEM is welcome Valuable Iphone Cases for Iphone 4 & 4S ... Business Scope CNC center machining,automatic CNC turning,stamping, drilling, grinding,tapping,mould design and ... -experience & good technical engineering support. Protective Case for Iphone 4