| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chem | China national standards | MT | 1266.61 | USD | 20250915 |
| Shandong Langchem | China national standards | MT | 1242.68 | USD | 20250915 |
| Shandong Langchem | China national standards | MT | 1243.33 | USD | 20250912 |
| Shandong Yeyang Chem | China national standards | MT | 1267.27 | USD | 20250912 |
| Shandong Yeyang Chem | China national standards | MT | 1267.0 | USD | 20250911 |
| Shandong Langchem | China national standards | MT | 1243.07 | USD | 20250911 |
| Shandong Junfeng | China national standards | MT | 1125.78 | USD | 20250910 |
| Shandong Langchem | China national standards | MT | 1242.58 | USD | 20250910 |
| Shandong Yeyang Chem | China national standards | MT | 1266.5 | USD | 20250910 |
| Shandong Langchem | China national standards | MT | 1243.52 | USD | 20250909 |