The description for the gearbox assambly :

   1. The main box and front ,rear auxiliary is the combined design , small volume vand light weight , has the high efficient driving .

    2. Double middle shaft , power dividing , unique structure .

    3,.The whole  synchronizer , sift gear portable nimble,the main box is double cone lock ring type synchronizer , has the large capacity .

    4. The front auxiliary is single  cone lock ring type synchronizer , the rear auxiliary is  enhanced locking pin type synchronizer .

    5.  the  cone of friction used the High-performance nonmetal material ,has the good reliability .

    6. It has the multiturn ways to take power .

It can matched with  tractor , cargo truck  ,crane truck and so on .