High pressure common rail engine is adopted, the high pressure oil pump of which is from German brand Bosch. All Hydraulic transmission oil inlet and outlet pipes are equipped with filter. By using twin-stage filtration to improve the reliability of hydraulic system and reducing the failure rate. The hose joint and transition joint in the pipeline are sealed with cone seal. The sealing effect is very good and the sealing ring is not needed. There will be leakage because of aged sealing ring during the long term use. Adjusting steering wheel can be adjusted according to working environment and operator's body shape. There is no fatigue during long time work. The heat dissipation space is completely new optimized, improve the heat dissipation performance more than 20%. LED luminaires are efficient & energy-saving, and have clearer light.