... Haoyuan Machinery Manufacturer Co., Ltd is specialized in the production of DC motor gear cabinets, stamping parts, plastic parts, ... , Powder Coating, Blacken, Hardening, Painting and many other treatment of the parts. 4.Quality Assurance : IPQC inspect each part during ... Mould designed in house,(4). Professional engineers team,(5). first class services . Welcome to send us drawing, sample or material ...