... orders ok... 4.OEM can be accepted. small pieces of metalMaterial: aluminium,stainless steel,brass,iron or as per your ... Haoyuan Machinery Manufacturer Co., Ltd is specialized in the production of DC motor gear cabinets, stamping parts, plastic parts, ... , Polishing, Powder Coating, Blacken, Hardening, Painting and many other treatment of the parts. 4.Quality Assurance : IPQC inspect each part during ...