1, China National Nuclear Corporation Limited
2. China ordnance industry group co., ltd
3. China Ordnance Equipment Group Co., Ltd
4. China Electronics Technology Group Co., Ltd..
5. China Aviation Engine Group Co., Ltd.
6. China Oil and Gas Group Co., Ltd.
7. China Petrochemical Company Limited?
These central enterprises have an important position and influence in their respective fields and have played an important role in promoting China's economic development and modernization.