| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yaowang Chem | China national standards | MT | 1898.68 | USD | 20251009 |
| Shandong Yaowang Chem | China national standards | MT | 1773.27 | USD | 20250930 |
| Shandong Yaowang Chem | China national standards | MT | 1686.53 | USD | 20250928 |
| Shandong Yaowang Chem | China national standards | MT | 1686.53 | USD | 20250927 |
| Shandong Yaowang Chem | China national standards | MT | 1686.53 | USD | 20250926 |
| Shandong Yaowang Chem | China national standards | MT | 1688.79 | USD | 20250924 |
| Shandong Yaowang Chem | China national standards | MT | 1688.79 | USD | 20250923 |