Metal & Mining
| Wed 23 Sep 2026
Beijing, Sept. 22 -- State Intellectual Property Office of China has published Beijing China Coal Mine Engineering patent application for Grouting Device. The invention was developed by Gao Xiaogeng, Chen Zhenguo, Chen Long, He Wen, Li Shengsheng, An Xuliang, Chang Ruoxi, Wang Chao, Chen Fei, Li Weiqi, An Lei, Yang Xue, Chen Jun..