| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 506.7 | USD | 20251010 |
| Shandong Qiangsen Chem | China national standards | MT | 506.7 | USD | 20251010 |
| Shandong Jinwen Chem | China national standards | MT | 506.7 | USD | 20251010 |
| CNPC | China national standards | MT | 634.78 | USD | 20251010 |
| Shandong Langchem | China national standards | MT | 626.34 | USD | 20251010 |
| Beijing Yanshan Petro | China national standards | MT | 633.37 | USD | 20251010 |
| Sinopec | China national standards | MT | 633.37 | USD | 20251010 |
| Shandong Yihe Chem | China national standards | MT | 527.81 | USD | 20251010 |
| Sinopec | China national standards | MT | 612.26 | USD | 20251010 |
| Shandong Yihe Chem | China national standards | MT | 534.85 | USD | 20251010 |