| Vendor | Spec | Unit | Price | Currency | Date |
| Lihuayi Weiyuan Chem | China national standards | MT | 918.22 | USD | 20251130 |
| Beijing Yanshan Petro | China national standards | MT | 875.84 | USD | 20251130 |
| Beijing Yanshan Petro | China national standards | MT | 974.73 | USD | 20251130 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1158.37 | USD | 20251129 |
| Beijing Yanshan Petro | China national standards | MT | 1059.49 | USD | 20251129 |
| Shandong Aite Chem | China national standards | MT | 1101.87 | USD | 20251129 |
| Qingdao Shengze Chem | China national standards | MT | 875.84 | USD | 20251129 |
| Shandong Qiangsen Chem | China national standards | MT | 932.35 | USD | 20251129 |
| Shandong Aite Chem | China national standards | MT | 1243.13 | USD | 20251129 |
| Shandong Aite Chem | China national standards | MT | 1101.87 | USD | 20251129 |