1. Designed for different types of soil, especially for silty and sand ground, especially suitable for strata with high groundwater level and large soil quality variation range;

2. Stable construction excavation face, low construction disturbance to surround soil, low ground setting.

3. Working continuously, fast jacking speed.

4. Remote control operation on the ground, fully automatic response within the head.

5. The axis has reliable sealing and long service life.