Transportation
| Mon 29 Dec 2025
Beijing, Dec. 30 -- State Intellectual Property Office of China has awarded a patent to Rizhao Depot Of China Railway Jinan Bureau Group Co Ltd for Railway Wagon Coupler Height Adjusting Device. Ma Zhitao, Song Weike, Lyu Jiandong, Qu Minghui, Shang Jun, Cui Zhengkang, Jia Yibo, Zhang Shide, Zhao Gang, Sun Hong and Sun Nianguo d..