China Railway 25th Bureau Group Signal Engineering Co., Ltd's former executive director Zhang Haijun under investigation and review.

According to the Discipline Inspection Commission and Supervisory Commission of Changsha, Zhang Haijun, the former party secretary and executive director of China Railway 25th Bureau Group Telecommunications Engineering Co., Ltd., is suspected of serious violations of discipline and law, and is currently under disciplinary review by the Discipline Inspection Commission of China Railway 25th Bureau Group Ltd. and investigation by the Supervisory Commission of Furong District, Changsha City.