Transportation
| Thu 20 Aug 2026
Beijing, Aug. 20 -- Zhengzhou Engineering of China Railway Seventh Group has obtained a patent for drilling pile reinforcement cage positioning device. This invention was developed by Liu Jiahao, Tao Yilong, Yang Pan, Wang Supeng, Jiang Wei, Sun Jiashan, Gong Ting, Yao Tianfeng, Wu Yansong, Hao Zhouxin, Li Xu, Zhang Jinchuan, So..