Tools and Machinery
| Thu 09 Apr 2026
Beijing, April 9 -- Nujiang Power Supply Bureau of Yunnan Power Grid has obtained a patent for self-locking shockproof hammer. This invention was developed by Geng Zuoxue, Li Xuefu, Hu Jian, Wang Yingwu, Wang Peiji, Deng Zaijie, Zhang Jiafu, Gao Chengyang, Chen Yongneng, Yang Teng, Shao Jie, Luo Xiushan, Zhao Siwei, Zhang Zhen, ..