Sanitation
| Tue 27 Oct 2026
Beijing, Oct. 26 -- Hebei Iron and Steel Group Shahe Zhongguan Iron Mine has been awarded a patent for Device for Cleaning Tailing Filling Accident Pool. This invention was developed by Ren Jianhui, Hu Yaxiong, Li Wenju, Wang Zheng, Liu Hanqing, Zhang Zitai, Zhang Qingbo, Feng Lipeng, Ren Shuai, Wang Sheguang, Bo Yuliang, Xiang ..