1.OME High quality 2.Competitive price 3.Casting auto parts 4.investment casting and machining Baoding Hairun Machi nery And Equipment Trading Co., Ltd. mostly produces steel casting, alloy steel casting, gray iron casting, ductile iron casting, non-ferrous metal casting, and other material castings. We mainly use investment casting art, sand casting art, silica sol casting art, die casting art, ...