... Haoyuan Machinery Manufacturer Co., Ltd is specialized in the production of DC motor gear cabinets, stamping parts, plastic parts, machine ... , Electroplating, Polishing, Powder Coating, Blacken, Hardening, Painting and many other treatment of the parts. 4.Quality Assurance : IPQC inspect each part ... material to process. micro Iron casting machinery parts pieces of metal for all kinds of machine