| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chem | China national standards | MT | 790.12 | USD | 20251121 |
| Shandong Yaoming Chem | China national standards | MT | 832.45 | USD | 20251121 |
| Sinopec | China national standards | MT | 804.23 | USD | 20251121 |
| Sinopec | China national standards | MT | 790.12 | USD | 20251121 |
| Sinopec | China national standards | MT | 790.12 | USD | 20251121 |
| Sinopec | China national standards | MT | 790.12 | USD | 20251121 |
| Shandong Zhiheng | China national standards | MT | 804.23 | USD | 20251121 |
| Shandong Hongyang Chem | China national standards | MT | 895.94 | USD | 20251121 |
| Shandong Aite Chem | China national standards | MT | 888.89 | USD | 20251121 |
| Shandong Aite Chem | China national standards | MT | 888.89 | USD | 20251121 |