Specifications used in Fuller/Fast 11509C sub-gearbox ISO:2002/TS16949 certification equipped in HOWO,FAW,OUMAN, DONGFENG... heavy trucks 1. Heat treament:carburizing and quenching 2. Surface disposal:forced shot-peening 3. 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 fuller sub-gearbox are available for us. 5. ISO:2000/TS16949 certification 6..Excellent quality and competitive price