Metal & Mining
| Fri 02 Oct 2026
Beijing, Oct. 2 -- State Intellectual Property Office of China has awarded a patent to Changchun Gold Design Inst Co Ltd for High-pressure Grouting Pump for Deep Well Mine. Yu Chengxiang, Bu Fangang, Chang Kaifu, Li Yan, Liu Haijian, Wang Chao, Zhang Xintian, Cui Minghao, Wang Xu, Wang Zhiwei, Tan Yinglai, Jiang Renhe and Tang H..