1. computer optimized structure design,four column structure,simple,economic and practical.

2. Cartridge equipped for hydraulic control system,reliable,durable and less hydraulic shock,shorter connection pipeline and fewer release points,hydraulic integrated system is adopted separate control unit

3. Independent electrical control,reliable,and convenient for maintenance

4. Centralized button control system,with adjustment,hand and semi-auto operation models at operator’s choice(semi-automatic has two type set-stroke single and set-pressure single).

5. The operating force,no-load travelling and,low-speed movement and travel range can be adjusted subject to technological requirement