Transportation
| Wed 14 Oct 2026
Beijing, Oct. 14 -- State Intellectual Property Office of China has awarded a patent to China Railway 15th Bureau Group for Device for Dredging Central Flushing Pipe of Slurry Shield. Li Shaohua, Yang Yuyou, Li Wenbing, Yao Tiejun, Tong Yanjie, Liu Zhongxin, Lee Keonwang, Qi Wenrui, Zhang Qingjun, Luan Huanqiang, Zhao Shiyong, P..