1. Golmud oil refinery in Qinghai
2. Qingyang Petrochemical Company Branch
3. Petrochina
pipeline company
4. Huabei Petroleum Engineering & Construction Co.,LTD.
5. Petrochina
sales in Guangdong Branch.
6. Petrochina
sales in Hunan Branch.
7. Petrochina sales in Hainan
Branch.
8. Petrochina
sales in Guangxi Branch.
