Metal & Mining
| Tue 16 Jun 2026
Beijing, June 16 -- Taiyuan Institute China Coal Technology & Eng Group and Shanxi Tiandi Coal Mining Machinery Co Ltd have sought patent for Coal Mining System. This invention was developed by Qiao Yanhua, Li Peng, Zhang Dongbao, Chen Mingjun, Han Pengcheng, Meng Wenjie, Liu Wenwu, Chen Mingjian, Chen Zhaohe, Gao Xiangxiang, Li..