used in Eaton 11509C Fuller and Fast gearbox ISO:2000/TS16949 certification equipped in Dongfeng,Howo, Ouman...heavy trucks 1. Heat treament:carburizing and quenching2. Surface disposal:forced shot-peening3. Advantage:introduced the high technology from American and produce the first rank-highest quality truck gear in China.4. All kinds of gears,welded axle and synchronizer assembly for 11509C ...