Security & Protection
| Mon 31 Aug 2026
Beijing, Sept. 1 -- Shaanxi Guotie Science and Technology Research Development has secured a patent on Railway Line Unmanned Aerial Vehicle Patrol System. Jiang Bo, Li Zhengmao, Yang Huaimao, He Xiaolin, Xie Bing, Sun Yong, Li Chaohua, Liu Tianhui, Yang Baoli, Guo Minjie, Tian Fugui, Wang Hongchang, Kang Yong, Zhang Jicheng, Yan..