1. The slewing center is equipped with a touch-type electric disc, which can rotate 360 degrees infinitely.

2. Boom telescopic limit marking and automatic stop report, limit switch three insurance.

3. Hydraulic double-section outriggers, extra-large outrigger span, larger working range and safer. The outrigger cylinder is ejected with small clearance.

4. U-shaped section of the arm body, anti-twist design, more uniform force, better telescopic guidance, more stable telescopic