1. Use precision laser technology, closed loop control technology and highly sophisticated integrated hydraulic system, and the microcomputer automatic control.
2. Use hydraulic drive system, with laser systems and computer control system to make automatic level and at the same time to finish leveling work.
3. The Laser Emitter which used to control the ground elevation is independent layout, so as the ground elevation won't produce accumulative error.
4. Laser Emitter, can auto control the flat surface and two-way slope.
