... Huabei bureau, Huadong Bereau and Xinjiang bureau of civil aviation. Achivement in part:Northwest Air Traffic Control ... Century Engineering, Datong Airport, Pizhou Airport, Lanzhou Zhongchuan Civil Airport, Huangshan Branch of Anhui Airport Group, Wuhai ... Third Research Institution of Air Force, Zhengding Airport of Civil Aviation Construction Headquarters, Eerduosi Airport, Yantai Airport, Capital ...