Metal & Mining
| Tue 01 Sep 2026
Beijing, Sept. 2 -- Chinese Patent for Spraying Device of Coal Mining Machine for Coal Mining has been issued to Sanmenxia Guanyintang Coal Ind Co Ltd. This invention was developed by Cao Senzhi, Yang Xiuqiang, Fu Dongya, He Yunlong, Wang Changfeng, Zhang Ke, Ma Hongwei, Yu Huafeng, Sun Baohong, Li Yongsheng, Xi Zhanwei, Li Gepi..