... customers' drawings or samples.3).Materials: Stainless steel ,cold work steel ,spring steel ,aluminum alloy,brass, bronze,copper, plastic ... quality control.100% inspection before shipping.Measuring tool:CMM,Projector,High gauge,Caliper,Pin Gauge,Thread ... time):Typeprecision machining productsMaterials:SUS 304Mateial GradeGB,ASTM,AISI,DIN,BS,JISProcessPrecision machining and millingTolerance:0. ...