1. Adequate technology for earthmoving operation which is formed by absorbing advanced European technology. The product orientation is mainly the working condition of rock operation, being highly efficient and economical;
2. Isuzu engine with advanced performance, high reliability and strong motive power;
3. Rexroth positive flow system is employed for the first time, idling automatically with low power loss and system heat, which enhance the controllability and accuracy control performance of the excavator;

1. 4. Enhanced working device design, adopting cast-weld structure of low welding stress, excellent effect of absorbing vibration and high strength.