| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 534.78 | USD | 20250925 |
| Shandong Yihe Chem | China national standards | MT | 534.78 | USD | 20250924 |
| Shandong Yihe Chem | China national standards | MT | 527.75 | USD | 20250924 |
| Shandong Yihe Chem | China national standards | MT | 527.75 | USD | 20250923 |
| Shandong Yihe Chem | China national standards | MT | 534.78 | USD | 20250923 |
| Shandong Yihe Chem | China national standards | MT | 534.41 | USD | 20250922 |
| Shandong Yihe Chem | China national standards | MT | 527.38 | USD | 20250922 |
| Shandong Yihe Chem | China national standards | MT | 527.22 | USD | 20250919 |
| Shandong Yihe Chem | China national standards | MT | 534.25 | USD | 20250919 |
| Shandong Yihe Chem | China national standards | MT | 534.57 | USD | 20250918 |