| Vendor | Spec | Unit | Price | Currency | Date |
| Beijing Yanshan Petro | China national standards | MT | 908.24 | USD | 20251126 |
| Jinan Jinrihe Chem | China national standards | MT | 1002.88 | USD | 20251126 |
| Shandong Langchem | China national standards | MT | 1115.88 | USD | 20251126 |
| Shandong Qiangsen Chem | China national standards | MT | 932.26 | USD | 20251126 |
| Shandong Langchem | China national standards | MT | 1115.88 | USD | 20251126 |
| Shandong Qiangsen Chem | China national standards | MT | 932.26 | USD | 20251126 |
| Shandong Mingyu | China national standards | MT | 1052.32 | USD | 20251126 |
| Sinopec | China national standards | MT | 1031.13 | USD | 20251126 |
| Shandong Langchem | China national standards | MT | 1108.82 | USD | 20251126 |
| Shandong Jiaen Chem | China national standards | MT | 953.44 | USD | 20251126 |