Metal & Mining
| Sat 21 Feb 2026
Beijing, Feb. 21 -- CHN Energy Group Ningxia Coal Industry has secured a patent on Cleaning Device. Qi Weibao, Meng Weining, Wang Guangming, Li Dengtong, Hou Lizhi, Mao Jianwu, Wang Yinbiao, Ma Wenchao, Yuan Guochang, Ye Huairui, Yan Sheng, Yuan Li, Shi Jianbo, Yang Yubo, Huang Zhibing, Ma Jun, Pang Xiaoning, Li Jinwang, Lu Qian..