| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 1042.15 | USD | 20251013 |
| Sinopec | China national standards | MT | 1126.65 | USD | 20251013 |
| Beijing Yanshan Petro | China national standards | MT | 1154.82 | USD | 20251013 |
| Shandong Junfeng | China national standards | MT | 985.82 | USD | 20251013 |
| Lihuayi Shandong | China national standards | MT | 985.82 | USD | 20251013 |
| Nanjing Runsheng Petro | China national standards | MT | 985.82 | USD | 20251013 |
| Shandong Laya Chem | China national standards | MT | 971.74 | USD | 20251013 |
| Shandong Jinwen Chem | China national standards | MT | 1197.07 | USD | 20251013 |
| Shandong Yuhuang Chem | China national standards | MT | 1288.61 | USD | 20251013 |
| Shandong Langchem | China national standards | MT | 1330.85 | USD | 20251013 |