1. China Petrochemical Group (Petrochemical Company): Founded in 1998, it is one of the largest petrochemical enterprises in China, mainly engaged in oil exploration, exploitation, refining and sales.
2. China Petroleum and Natural Gas Corporation (CNOOC): Founded in 1998, it is one of the largest oil and natural gas enterprises in China, mainly engaged in oil exploration, exploitation, oil and gas pipeline construction and sales.
3. Industrial and Commercial Bank of China: Established in 1984, it is one of the four state-owned commercial banks in China, mainly engaged in commercial banks, investment banks and financial services.
4. China Mobile Communications Group Company: Established in 2000, it is one of the largest mobile communications operators in China, mainly engaged in mobile communications, wired communications and Internet services.
5. China Railway Corporation: Founded on 20 13, it is the predecessor of China Railway Corporation, mainly engaged in railway transportation, railway construction and railway equipment manufacturing.
The above contents refer to Baidu Encyclopedia-China Railway Corporation Baidu Encyclopedia-China Mobile Communications Group Company.