Construction
| Sun 12 Apr 2026
Beijing, April 13 -- Henan Xinyi Mining Tech Co Ltd has been awarded a patent for Grouting Machine for Overlying Strata Separation Layer Construction. This invention was developed by Wang Di, Li Hui, Han Yingying, Yang Pei, Qiao Zhanyi, Duan Songnan, Yan Tingxu, Mao Pengfei, Zhao Yong, Wang Zhiyi, Mao Yaming, Ma Xuebin, Ren Quan..