| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 536.4 | USD | 20251029 |
| Shandong Langchem | China national standards | MT | 508.17 | USD | 20251029 |
| Sinopec | China national standards | MT | 614.03 | USD | 20251029 |
| Sinopec | China national standards | MT | 635.21 | USD | 20251029 |
| Beijing Yanshan Petro | China national standards | MT | 635.21 | USD | 20251029 |
| Shandong Langchem | China national standards | MT | 628.15 | USD | 20251029 |
| CNPC | China national standards | MT | 636.62 | USD | 20251029 |
| Shandong Jinwen Chem | China national standards | MT | 508.17 | USD | 20251029 |
| Beijing Yanshan Petro | China national standards | MT | 522.28 | USD | 20251029 |
| Lihuayi Weiyuan Chem | China national standards | MT | 522.28 | USD | 20251029 |