The ultra long arm，the coverage area is big.
The standard segment section is wide，rigidity is good，complete machine is stable when craning，swings slightly.
The standard segment principal branch model is big.
The electrical system uses domestic high quality or importing parts，performance is stable and reliable.
The standard segment，drawbar，from top to bottom tuntable.and other major components，used in all CO2 gas-shielded welding，penetration depth deep，small deformation.
Slewing mechanism adopt two-speed motor or winding motor，starts smooth and reliable，no impact.
Hoisting mechanism with good performance of speeding，lifting and declining no impact and smooth.
