... machining part 1,Material:steel, or as per customers' request 2 Surface Treatment:Yellow zinc plated 3.good price 1.High quality and ... iron and so on4.Process: lost wax process, soluble glass process , silicon process casting 5.Application ... requirement or drawings8.surface treatment,polishing,machining,machining center,plating,HeatTreatment,ect.Welcome customer's ... term, thank you. CNC machining part