CNC machining parts 1,.material:carbon steel 2.finished:plain,zinc/nickle plated 3.pass:ISO9001:2008 4.high quality CNC machining parts1. Material: aluminum,stainless steel, copper , alloys,mild steel,middle carbon steel2. Finish: plain,black,zinc/nickel plated and so on , according to customers' requirement3. Send us a drawing , a sample , the specification you have ,we will replicate it or just ...