i.  emission volume is up to internation standard which brings more powerful momentum and less fuel consumption, less noise.

ii. hydraulic controlling system with negative flow, high intelligence, easy operation and high efficiency.

iii. better operating ability in the mining industry, lower cost and higher return.

iv. new malfunction diagnosis system which prolongs the repair circle, and lower repair cost.

v.  H bottom frame, better anti-twisting ability and firm rotating platform, secure and convenient walking board.