Cummins engine (conforming to Ⅱ-stage emission regulations), powerful, energy efficient, reliable and durable; advanced negative flow hydraulic system, comfortable operation, high operating efficiency, excellent cost performance; full power control, four power modes to adapt to different work; reliable and accurate fuel injection system, real-time control of fuel injection, making combustion more complete, fuel efficiency; full 3D modeling and finite element analysis technology to ensure the reliability and stability of structural parts.