1. China Railway Second Engineering Group Corporation, formerly known as Southwest Railway Engineering Bureau, was established in June 1950 and is a core member enterprise of China Railway.
2. China Water Resources and Hydropower Seventh Engineering Bureau Co., Ltd., established in 1965, belongs to China Water Resources and Hydropower Construction Corporation.
3. China Chemical Engineering Seventh Construction Co., Ltd. is a wholly-owned subsidiary of China Chemical Engineering Group Co., Ltd.
4. China 19th Metallurgical Group Co., Ltd., established in June 1966, belongs to China Minmetals Group.
5. China Railway Eighth Engineering Group Co., Ltd. is a key member of China Railway, one of the top 500 enterprises in the world.
6. China Wu Ye Group Co., Ltd. is the core subsidiary of China Minmetals and China MCC.