| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Aite Chem | China national standards | MT | 1243.66 | USD | 20251201 |
| Lihuayi Weiyuan Chem | China national standards | MT | 876.21 | USD | 20251201 |
| Shandong Langchem | China national standards | MT | 1116.47 | USD | 20251201 |
| Shandong Aite Chem | China national standards | MT | 1102.33 | USD | 20251201 |
| Shandong Langchem | China national standards | MT | 1109.4 | USD | 20251201 |
| Beijing Yanshan Petro | China national standards | MT | 918.61 | USD | 20251201 |
| Shandong Qiangsen Chem | China national standards | MT | 932.74 | USD | 20251201 |
| Shandong Aite Chem | China national standards | MT | 1102.33 | USD | 20251201 |
| Shandong Xima | China national standards | MT | 890.35 | USD | 20251201 |
| Beijing Yanshan Petro | China national standards | MT | 1059.94 | USD | 20251201 |