China Railway 20th Bureau Yi * * has several subsidiaries. Where are they?

Hello, I'm glad to answer your question. Thank you very much for your patience. China Railway 20th Bureau has seven subsidiaries. The details are as follows: Company One (Suzhou), Company Two (Beijing), Company Three (Chongqing), Company Four (Qingdao), Company Five (Kunming) and Company Six (Xi 'an) Electrification Company (Xi 'an) are the results we found for you. Which company should I consult? Please call their customer service number. I hope my answer is helpful to you. Wish you a happy life!