Steel
| Mon 13 Jul 2026
Beijing, July 13 -- Zhejiang Jinggong Steel Building Group Co Ltd has submitted a patent application for Fabricated Tool Column Suitable for Reverse Building Method Construction and Using Method. This invention was developed by Yuan Qifeng, Jia Shangrui, Zhang Min, Jia Mingfei, Xing Zunsheng, Dai Tao, Xu Huatao, Sun Jiaxing, Lu ..