Tools and Machinery
| Mon 04 May 2026
Beijing, May 4 -- Jincheng Lanyan Coal Ind Co Ltd has applied Chinese patent for Directional Drilling Machine Tool for Fractured Stratums in Underground Coal Mine and Using Method. Wang Junhong, Fang Jun, Zhao Wei, Guo Chaowei, Yang Weifeng, Zhu Pengfei, Dong Changle, Cheng Wei, Zhao Jianguo, Guo Ruiyu, Shao Guojie, Jiao Yufei, ..