| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong QiFa Chem | China national standards | MT | 886.61 | USD | 20250925 |
| Shandong QiFa Chem | China national standards | MT | 886.61 | USD | 20250924 |
| Shandong QiFa Chem | China national standards | MT | 886.61 | USD | 20250923 |
| Shandong QiFa Chem | China national standards | MT | 886.0 | USD | 20250922 |
| Shandong QiFa Chem | China national standards | MT | 885.73 | USD | 20250919 |