Telecom
| Sun 19 Apr 2026
Beijing, April 20 -- Yunnan Science Research Institute of Communication has submitted a patent application for Directly-buried Combined Guardrail Structure. Li Shuangxiang, Hu Zhibin, Zhang Kaiwen, He Yongjun, Sun Hongxian, Ma Liang, Li Zhenhui, Zhang Xiang, Chen Xingwen, Zhao Yuanchang, Yang Mingshuang, Baek Seung-do, Zhang Jia..