... help to what you like. Quality control 1.We have self-governed inspection Dept. 2.All our QC have more than ... : 0.002mm 6.Angle clearance:R0.03mm Item Steel machined welding box Material Steel ,Stainless steel, Iron ,Aluminum, Brass and ... , electroplating, spraying, and painting and so on.Main process Machining,turning,milling,drilling,grinding,boring,stamping,threading, tamping and etc.Production ...