Metal Shell: 1.CNC Laser cutting,punching,bending; 2.All metal Stamping; 3.Welding,painting; 4.+/-0.1mm Precison. Metal sheel,metal cabinetWe ... have four workshops of the metal ,plastic,polishing and painting.The main ... can supply many kinds of transformer frame, mailbox, housing caseOEM services is also welcomed metal shell,metal cabinet