1. limit mitigates abrasion of hydro-cylinder and overload of hydraulic systems, which prolongs usage life of the machine.

2. Decline buzzing alert and light alert reduce the possibility of safety accidents.

3. The surface adopts the shot blasting, degreasing, phosphating,static powder coating, so it is of anti-erosion, good adhesion and high hardness.

4. Double deck steel oil pipe achieves good explosion-proof performance.

5. With high quality international-standard steel as raw materials, the equipment has bigger self-weight compared to homogeneous ones. Solid manganese plate(20mm) holes of front arms are made with CNC sawing machine to ensure the consonant quality.

6. 120% dynamic loading test and 150% static loading test comply with the CE standard.