| Vendor | Spec | Unit | Price | Currency | Date |
| Beijing Yanshan Petro | China national standards | MT | 1158.96 | USD | 20251210 |
| Sinopec | China national standards | MT | 1130.69 | USD | 20251210 |
| Shandong Jinwen Chem | China national standards | MT | 1201.36 | USD | 20251210 |
| Shandong Langchem | China national standards | MT | 1300.3 | USD | 20251210 |
| Shandong Langchem | China national standards | MT | 1335.63 | USD | 20251210 |
| Shandong Yuhuang Chem | China national standards | MT | 1293.23 | USD | 20251210 |
| Shandong Qiangsen Chem | China national standards | MT | 1045.89 | USD | 20251210 |
| Lihuayi Shandong | China national standards | MT | 911.62 | USD | 20251210 |
| Lihuayi Shandong | China national standards | MT | 911.62 | USD | 20251210 |
| Lihuayi Shandong | China national standards | MT | 911.62 | USD | 20251210 |