| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Angxin Chem | China national standards | MT | 619.66 | USD | 20251013 |
| Jinan Angxin Chem | China national standards | MT | 618.83 | USD | 20251009 |
| Jinan Angxin Chem | China national standards | MT | 618.94 | USD | 20250929 |
| Jinan Angxin Chem | China national standards | MT | 618.39 | USD | 20250928 |
| Jinan Angxin Chem | China national standards | MT | 618.39 | USD | 20250926 |
| Jinan Angxin Chem | China national standards | MT | 619.22 | USD | 20250925 |
| Jinan Angxin Chem | China national standards | MT | 619.22 | USD | 20250924 |
| Jinan Angxin Chem | China national standards | MT | 647.37 | USD | 20250923 |
| Jinan Angxin Chem | China national standards | MT | 646.92 | USD | 20250922 |
| Jinan Angxin Chem | China national standards | MT | 646.72 | USD | 20250919 |