| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chem | China national standards | MT | 1261.02 | USD | 20250815 |
| Shandong Langchem | China national standards | MT | 1237.2 | USD | 20250815 |
| Shandong Yeyang Chem | China national standards | MT | 1261.62 | USD | 20250814 |
| Shandong Langchem | China national standards | MT | 1237.79 | USD | 20250814 |
| Shandong Junfeng | China national standards | MT | 1121.44 | USD | 20250814 |
| Shandong Yeyang Chem | China national standards | MT | 1261.39 | USD | 20250813 |
| Shandong Junfeng | China national standards | MT | 1121.23 | USD | 20250813 |
| Shandong Langchem | China national standards | MT | 1237.56 | USD | 20250813 |
| Shandong Junfeng | China national standards | MT | 1120.17 | USD | 20250812 |
| Shandong Langchem | China national standards | MT | 1236.38 | USD | 20250812 |