... front bulldozing plate, rear scarification device,front scarification harrow and automatic leveling device can be added . Main Technical SpecificationGR135Basic specificationEngine model6BT5 ... ,13,30km/hTractive force(f=0.75)61.3KNMax. gradeability20%Tire inflation pressure300kPaWorking hydraulic pressure16MPaTransmission pressure1.3~1.8MPaOperating specificationMax. steering angle ...