... Fenghua 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 ... the first rate steel plate, (2). Professional stamping with good qualification ,(3). Mould designed in house,(4). Professional engineers ...