Difference between China Railway Tunnel Co., Ltd. and China Railway Tunnel Bureau

The difference between subordinate subsidiaries. According to the difference between China Railway Tunnel Co., Ltd. and China Railway Tunnel Bureau, it is the difference between subsidiaries. China Railway Tunnel Co., Ltd. belongs to China Railway Tunnel Bureau Group and is a subsidiary of China Railway Corporation, a fortune 500 company in the world. The company is mainly engaged in urban rail transit, long tunnel, municipal engineering, highway engineering, mechanical and electrical equipment installation engineering construction, TBM, shield and tunnel construction technical consulting services.