In which city is the headquarters of China Railway Seventh Bureau?

The headquarters of China Railway Seventh Bureau is in Beijing. China Railway Seventh Bureau is a large state-owned enterprise under China Railway Corporation, mainly engaged in railway construction, equipment manufacturing, engineering construction, cargo transportation, property management and other businesses. Headquartered in Haidian District, Beijing, it is an important force of China Railway Construction. The Group has 1 1 wholly-owned subsidiaries, 2 branches and 1 provincial technology research and development centers. Subsidiaries and branches are located in Henan, Hubei and Shaanxi provinces, and six regional operation branches have been established, which are distributed in all parts of the country and 9 foreign countries. At the end of 2019.8 billion yuan, the total assets of the enterprise were14,000 people, including 7,600 professional technicians and 440 first-class builders. It has 6,000 sets of various large-scale construction machinery, with an original equipment value of 2.77 billion yuan, an annual salary of more than 30 billion yuan and a construction production capacity of more than 26 billion yuan.