High quality DERRICK CRANE model 3025-10T; special use for dismantle tower cranes on roof top of high-rise buildings when tower cranes can not jacking down by themselves; also use Derrick crane to lift up Chiller machines or other equipment from ground to roof top.

High quality DERRICK CRANE model 4040-16T; special use for dismantle tower cranes on roof top of high-rise buildings when tower cranes can not jacking down by themselves; also use Derrick crane to lift up Chiller machines or other equipment from ground to roof top.