| Vendor | Spec | Unit | Price | Currency | Date |
|---|---|---|---|---|---|
| Shandong Chambroad | China national standards | MT | USD | 20251231 | |
| Binzhou Dayou Energy | China national standards | MT | USD | 20251231 | |
| Dongying Haike | China national standards | MT | USD | 20251231 | |
| Wanhua Chem | China national standards | MT | USD | 20251231 | |
| Dongying Yatong | China national standards | MT | USD | 20251231 | |
| Zibo Qixiang Chem | China national standards | MT | USD | 20251231 | |
| Shandong Qicheng | China national standards | MT | USD | 20251231 | |
| Hongrun Petro | China national standards | MT | USD | 20251231 | |
| Dongying CNOOC | China national standards | MT | USD | 20251231 | |
| Zibo Dream | China national standards | MT | USD | 20251231 |
