| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun | China national standards | MT | 606.66 | USD | 20251031 |
| Shandong Qiangsen Chem | China national standards | MT | 508.02 | USD | 20251030 |
| Shandong Jinwen Chem | China national standards | MT | 508.02 | USD | 20251030 |
| CNPC | China national standards | MT | 636.43 | USD | 20251030 |
| Shandong Langchem | China national standards | MT | 627.96 | USD | 20251030 |
| Beijing Yanshan Petro | China national standards | MT | 635.02 | USD | 20251030 |
| Shandong Langchem | China national standards | MT | 508.02 | USD | 20251030 |
| Shandong Zhiheng | China national standards | MT | 591.98 | USD | 20251030 |
| Shandong Fusheng | China national standards | MT | 564.46 | USD | 20251030 |
| Shandong Fusheng | China national standards | MT | 705.58 | USD | 20251030 |