Security & Protection
| Fri 12 Dec 2025
Beijing, Dec. 13 -- Shangqiu Yu Dong Highway Survey and Design Co Ltd has applied Chinese patent for Safety Facility System Suitable for Highway Grade Crossing with Large Traffic Volume. Zhang Shaohua, Ma Guang, Ren Guangzhou, Zhang Lin, Lu Yali, Zhang Yimu, Li Yu, He Kun, Han Meng, Yu Xiaoyan, Li Bo, Li Xiao, Li Wen, Yang Ming ..