Enviornmental
| Mon 21 Sep 2026
Beijing, Sept. 21 -- Huaibei Mining has sought patent for Sewage Treatment Device for Shield Tunneling Machine. This invention was developed by Liu Dongfeng, Li Yingzhou, Zhu Lezhang, Wang Duochun, Liu Jinjin, Liu Zhen, Liu Tong, Gao Jianhua, Huang Beihai, He Ziming, Nie Zheng, Zhou Qinzong, Sun Fang, Fang Liangcai and Xue Xinra..