Fishing
| Sun 21 Jul 2024
Beijing, July 22 -- Tianjin Geothermal Exploration and Development Designing Inst has been granted a patent for fishing tool for plugging device. This invention was developed by Sun Yudong, Lin Jianwang, Yang Zhongyan, Li Zheng, Li Shan, Huang Xianlong, Zhu Ting, Cui Chaofan, Yuan Bo, Zhang Hongyu, Lin Shengming, Li Zhijie, Li W..