... guarantee the quality 4.OEM service Item NO. jig and fixture design for sand casting productsMaterialsIron, aluminum, steel, copper, plastic ... goods according to your special requirement for the packing duing the specification of different goods;9,Payment term :T/T ... Polishing, Powder Coating, Blacken, Hardening, Painting and many other treatment of the parts.Quality Assurance :IPQC inspect each during ...