With the turbocharged, high-torque, high-power engine, the actual digging workload per hour is improved by 15% over that of foreign brands; the digging workload per litre of fuel is improved by 10% over that of domestic brands. The Rexroth hydraulic system features independent distribution of load and flow, flexible action, the highest efficiency in the industry; the system pressure is improved to 27.5MPa, featuring high digging force, wide application scope and professional response to the pan soil. The high-efficient and high-capacity radiator is of tandem pattern, which improves cooling performance, ensures PTO reliability and endures continuous operation.