Metal & Mining
| Mon 16 Feb 2026
Beijing, Feb. 16 -- CSCEC Road & Bridge Group has submitted a patent application for Escape Device for Tunnel Drilling and Blasting Method Construction. This invention was developed by Fan Pengpeng, Yue Lingfeng, Ge Chunlei, Kang Gong, Du Peng, Hu Huixuan, Wang Likai, Xu Haining, Geng Haigang, Wang Kai, Li Chong, Zhang Tiantian,..