（1）. Features: High load capacity: Steyr domestic unique advanced technology, increase the quenching cross section bridges strengthened, so that the largest single rear axle load up to 16t; 2. W Series ratio :4.42 - 9.49 other speed than for vehicle matching, select the appropriate ratio to ensure that heavy trucks in a variety of road conditions for the exercise of adaptability; 3 high through performance: As a hub reduction mechanism, the central main reduction gear mechanism greatly reduced, according to the vehicle system matching, optional 11:00-20,11:00 R20 ,12:00-20, 12:00 R20 ,14:00-20 and other tire. So that the vehicle has a high through sex; 4 High reliability: three decades of drive axle set research and development, production experience and advanced technology and equipment, the use of active and passive optimized gear design, manufacturing processes, all imports of seal. Improve life, reduce maintenance costs of the bridge. 5 high safety performance: Wheel Side Brake optimized design and harsh experimental evaluation in order to ensure your driving safety, brakes with 420 × 185,410 × 220 and many other structures, optional ABS anti-lock devices. 6 perfect service: relying on group across the country more than 200 authorized service stations, all-round, high-efficiency, to meet the needs of users of the service concept is our ultimate goal.