Yongmao STL4600 Luffing Tower Crane Technical Achievement Appraisal Held
September 04,2026

On August 19, the China Construction Machinery Association (hereinafter referred to as the Association) held an appraisal meeting for scientific and technological achievements in Fushun, Liaoning. The meeting carried out a special review and appraisal of the STL4600 super-large luffing jib tower crane independently developed by Fushun Yongmao Construction Machinery Co., Ltd. The appraisal committee comprised Qi Jun, head of the Association's expert group; Professor Lu Nianli of Harbin Institute of Technology; Researcher Li Jianyou of China Academy of Machinery Science and Technology Group Co., Ltd.; Professor Xu Gening of Taiyuan University of Science and Technology; and Professor-level Senior Engineer Guo Haokan of Shanghai Mechanized Construction Group Co., Ltd.

During the review, the expert group listened carefully to the project R&D report, systematically checked all technical documents, and conducted on-site inspections of the prototype and production/test facilities. After rigorous questioning, in-depth discussion and comprehensive evaluation, the experts unanimously concluded that the project is highly innovative and technically difficult, possesses independent intellectual property rights, and has reached an internationally advanced overall technology level. They agreed to approve the appraisal.

The successful development and smooth approval of the STL4600 tower crane mark a key milestone in Yongmao’s 30-year innovation journey, fully demonstrating its innovation potential and development vitality. Going forward, Yongmao will continue to focus on the two core areas of intelligent and green construction machinery, deepen R&D and manufacturing of high-end intelligent equipment, and drive high-quality enterprise development.