... 4 size and color optional Our advantage:good quality,high technology,fine management ItemCNC processing mechanical shell Material ... SteelSteel,stainless steel,aluminum,brass,etc Making process Laser cutting,CNC Punching,CNC Bending,Tig Welding,Mig welding, ... Electronic polish,silk screen,etc Major Equipment Laser cutting machine;CNC shearing machine,Cnc Punching machines;CNC bending machines,Tig ...