... advantages1.Manufacturer. Drawings and samples are acceptable.2.Complete production line and QA equipments.3.Supplier of SINOTRUK, DONGFENG ... the ISO-TS16949:2002 certificate and consists of a complete range of gear processing facilities including forging equipments, gear ... machines, 2 vacuum ionic nitriding furnaces and the largest line-up of vertical gear-broaching machines in Shandong, with ...