... processing mechanical shell Material SteelSteel,stainless steel,aluminum,brass,etc Making process Laser cutting,CNC Punching,CNC Bending,Tig Welding,Mig ... machines,Tig welding machines;Mig welding machines,Spot welding machines;stamping machines;Rolling machines;Pipe bender;U-shape extrusion presscold press;Cold press;Turning machines,Milling machines,Grinding machines,Oil ...