Tools and Machinery
| Sun 26 Apr 2026
Beijing, April 27 -- Inner Mongolia North Hauler Joint Stock has submitted a patent application for Cylinder Part End Drilling Fixing Device and Using Method Thereof. This invention was developed by Li Laiping, Bayaertou, Guo Haiquan, Zhao Xinchun, Li Xianwu, Duan Jingfei, Yan Haijun, Wen Chunmei, Wu Pengcheng, Guo Caiguang, Zha..