Construction
| Tue 26 May 2026
Beijing, May 26 -- Sichuan Gangjian Water Conservancy and Hydropower Eng Co Ltd has filed a patent application for Tunnel Wet-type Concrete Spraying Process. This invention was developed by Sun Mi, Zhang Jun, Tang Xiao, Zhang Chengming, Wang Hua, Zhang Yange, Chen Yong, Li Bin, Yang Hui, Chen Xiaoxiao, Yang Li, Zhou Yuan, Zhang ..