1)  Twin countershaft structure in main & aux. boxes,16 speed 2×4×2

2) Adoption of the optimized short-stroke synchronizers to improve shifting performance, and helical gear design of the aux. box to improve loading capacity

3) Improved transmission reserved interface for forced cooling

4) Large speed ratio range, applicable for various working conditions, small speed ratio difference, good fuel economy

5) Various operation types, single or dual lever long-distance operation and direct operation