... with aluminum alloys for machine parts ARTprecision die casting with aluminum alloys for machine partsMATERIALcarbon steel,stainless steel,,aluminum,etc. ... EACH ITEMCERTIFICTEISO9001:2000 Material:carbon steel,stainless steel,,aluminum,etc.Surface treatment: sand blasting,polishing,zinc ... and send free sample to you for close inspection. precision die casting with aluminum alloys for machine parts