Gear 1.TS 16949 audited manufacturer 2.OE quality 3.We are able to manufacture all types ... casting , gravity casting , sand castingMachiningTurning , milling , drilling , grinding , threading , CNC machining, etc.FinishingSand blasting , polishing , plating , acid treatment , anodizing , painting ... hardness testing, tensile testing, impact testing.CertificateISO9001:2000 / TS16949 High quality gear