The most advanced technology is imported to the design of XCMG tower cranes. The main materials are selected with high quality and strong torsional strength. The jibs are designed with various sections to reduce the self weight and wind pressure. In order to improve the operation of cranes, latest falling protection technology is used to ensure the security and stability during climbing. All concerned matters such as raw material selecting, structure designing, working mechanism, control system, efficiency, safety and reliability can reach the world level.