... top five standard cabs, the new power system, Vehicle modelHOWO Tractor A7/420/S32 /6x4GC/4Total weight kg25000Kerb weight kg8800Towing weight ... ,9m3,10m3,11m3 and 12m3,3,Howo tracotrs: Howo 4x2 tractor; Howo 6x4 tractorEngine power for the above heavy duty trucks ...