| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Chambroad | China national standards | MT | 735.65 | USD | 20251211 |
| Sinopec | China national standards | MT | 749.79 | USD | 20251211 |
| Shandong Jinwen Chem | China national standards | MT | 933.71 | USD | 20251211 |
| Sinopec | China national standards | MT | 1096.4 | USD | 20251211 |
| Shandong Langchem | China national standards | MT | 1259.09 | USD | 20251211 |
| Shandong Chambroad | China national standards | MT | 1075.18 | USD | 20251211 |
| Sinopec | China national standards | MT | 933.71 | USD | 20251211 |
| Shandong Jinwen Chem | China national standards | MT | 932.82 | USD | 20251210 |
| Shandong Jinwen Chem | China national standards | MT | 932.82 | USD | 20251210 |
| Shandong Jinwen Chem | China national standards | MT | 932.82 | USD | 20251210 |