... your requirements. MaterialCarbon Steel , alloy steel , stainless steel , aluminum alloy , zinc alloy , brass , gray iron , nodular cast ... casting , sand casting MachiningTurning , milling , drilling , grinding , threading , CNC machining, etc. FinishingSand blasting , polishing , plating , acid treatment , ... CertificateISO9001:2000 / TS16949 Main productsCNC Machining Parts , Investment Castings