Construction hoist 1.CE,CQC, ISO Certification 2.Factory was founded at 1961,1600 workers. 3.Perfect after-sales service Construction hoist,tower crane,China tower craneFeatures:This series of tower cranes has a horizontal jib frame, a jib-trolley radius-changing mechanism and a hydraulic self-raising mechanism. It is original in design, reliable in operation and satisfactory in shape. Equipped ...