... Parts 1.Material:Brass copper 2.Tolerance:0.01mm 3.Certification:ISO9001 ... steel ,cold work steel ,Spring steel , martensitic steel,aluminum ,brass, bronze,copper, according to customer request7)Products : precision parts ... ,AL5052,AL6061,AL6062,AL7075CopperCopper , Brass, BronzePlasticPVC,Bakelite,Derlin, AS Derlin, Acrylic,Anti-Stalic, Acrylic,PC, Black Conductive Plastic, Telfon, NylonEngineering ...