Fishing
| Fri 16 Oct 2026
Beijing, Oct. 16 -- Ccteg Coal Mining Research Inst Co Ltd and Ccteg Xi'an Mining Engineering Tech Co Ltd have applied Chinese patent for Directional Drill Rod Fishing Device, System and Method. Wang Zhichao, Du Shengjun, Xie Yanwen, Zhang Xiaoqi, Ren Shuo, Tong Jiawei, Zhang Xiaokai and Pang Lining developed it.
The patent a..