Tools and Machinery
| Fri 16 May 2025
Beijing, May 17 -- Shanxi First Construction Group has received a patent for fish-scale pit rotary drilling machine. This invention was developed by Fang Dongxiang, Cui Weijuan, Zang Lu, Li Daqing, Du Yuesheng, Guo Ting, Zhang Lei, Hao Rijin, Shao Long, Ren Yanqiang, Cui Yuhui, Song Chunxia and Xu Huahua.
The patent applicati..