... steel, Iron ,Aluminum, Brass and etcMaterial standard DIN ,ASTM, JIS, BS,NF,GB and so onTolerance +/-0.005 or ... specificationsSurface treatment Polishing,galvanized, electroplating, spraying, and painting and so on.Main process Machining,turning,milling,drilling ... ,grinding,boring,stamping,threading, tamping and etc.Production equipmentInstrument lathe, CNC lathes machine , ...