Metal & Mining
| Tue 31 Mar 2026
Beijing, March 31 -- Zaozhuang Mining Group Co Ltd Chaili Coal Mine has applied Chinese patent for Single-hole Deep and Shallow Layered Grouting Device and Method. Zhang Tao, Wu Yangyang, Gu Zhaofu, Tanaka Chun, Yang Fan, Zhang Heng, Fan Chuang, Ren Hongge, Wang Xin, Liao Xiangyu, Kong Chunjing, Gao Sen and Feng Hao developed it..