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