Which province is China Railway No.1 Bureau to No.25 Bureau located in?

The locations from China Railway No.1 Bureau to China Railway No.25 Bureau are as follows:

China Railway No.1 Bureau is located in Xi 'an, Shaanxi, China Railway No.2 Bureau is located in Chengdu, Sichuan, China Railway No.3 Bureau is located in Taiyuan, Shanxi, China Railway No.4 Bureau is located in Hefei, Anhui, China Railway No.5 Bureau is located in Guiyang, Guizhou, China Railway No.6 Bureau is located in Beijing, China Railway No.7 Bureau is located in Zhengzhou, Henan, China Railway No.8 Bureau is located in Chengdu, Sichuan, China Railway No.9 Bureau is located in Shenyang, Liaoning and China Railway No.10 Bureau is located in Jinan, Shandong.

China Railway 11th Bureau is located in Wuhan, Hubei, China Railway 12th Bureau in Taiyuan, Shanxi, China Railway 13th Bureau in Tianjin, China Railway 14th Bureau in Jinan, Shandong, China Railway 15th Bureau in Beijing, China Railway 16th Bureau in Beijing, China Railway 17th Bureau in Taiyuan, Shanxi, China Railway 18th Bureau in Tianjin, China Railway 19th Bureau in Beijing and China Railway 20th Bureau in xi 'an, Shaanxi.

China Railway 21st Bureau is located in Lanzhou, Gansu, China Railway 22nd Bureau is located in Beijing, China Railway 23rd Bureau is located in Chengdu, Sichuan, China Railway 24th Bureau is located in Shanghai, and China Railway 25th Bureau is located in Guangzhou.

Brief introduction of China railway

The 25 bureaus of China Railway actually belong to two companies. The first batch of 10 bureaus belong to China Railway. Its predecessor is the General Administration of Capital Construction of the Ministry of Railways, and its business scope covers almost all infrastructure fields. After 15 Bureau is affiliated to China Railway Construction. Its predecessor is the Chinese People's Liberation Army Railway Corps, and it is one of the most powerful giant construction groups in the world.