Tools and Machinery
| Thu 28 May 2026
Beijing, May 28 -- Shanghai Tunnel Eng Co Ltd has filed a patent application for Shield Tunnel Segment Punching Device. This invention was developed by Zhu Yanfei, Wang Yanjie, Li Xun, Wang Huilei, Fang Li, Li Yongdi, Xin Wansong, Chen Xiaolong, Zhu Zhihao, Liu Yitao, Liang Xiaochao and Nian Zhimin.
The patent application num..