| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chem | China national standards | MT | 1260.79 | USD | 20250820 |
| Shandong Junfeng | China national standards | MT | 1120.7 | USD | 20250820 |
| Shandong Yeyang Chem | China national standards | MT | 1260.79 | USD | 20250820 |
| Shandong Langchem | China national standards | MT | 1236.97 | USD | 20250820 |
| Shandong Langchem | China national standards | MT | 1237.41 | USD | 20250819 |
| Shandong Yeyang Chem | China national standards | MT | 1261.23 | USD | 20250819 |
| Shandong Junfeng | China national standards | MT | 1121.09 | USD | 20250819 |
| Shandong Yeyang Chem | China national standards | MT | 1261.88 | USD | 20250818 |
| Shandong Langchem | China national standards | MT | 1238.05 | USD | 20250818 |
| Shandong Junfeng | China national standards | MT | 1121.67 | USD | 20250818 |