Transportation
| Mon 10 Aug 2026
Beijing, Aug. 11 -- China Railway Sixth Group and China Railway 6th Group Taiyuan Railway Construction Co Ltd have received a patent for Tunnel Waterproof Plate Fixing Pipe Wrench Device. This invention was developed by Zhao Zhiwei, Huo Jiangfeng, Lu Yang, Zhou Yangzhou, Zhou Bin, Gao Zhiping, Wang Jinhui, Ji Dongke, Shi Rui, Zh..