Tools and Machinery
| Fri 07 Aug 2026
Beijing, Aug. 7 -- Henan Xinzheng Coal and Electric has submitted a patent application for Drilling Rig. This invention was developed by Yao Bingao, Huang Shaolong, Wang En, Cheng Baojun, Song Xiaobin, Wei Chaoyang, Li Yan, Ma Sen, Wang Baohua and Chu Wenjie.
The patent application number is CN202610488794 20260414. The paten..