■ The ultra long arm（48/50m），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 turntable.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.
