| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Angxin Chem | China national standards | MT | 563.21 | USD | 20251014 |
| Jinan Angxin Chem | China national standards | MT | 563.32 | USD | 20251013 |
| Jinan Angxin Chem | China national standards | MT | 562.57 | USD | 20251009 |
| Jinan Angxin Chem | China national standards | MT | 562.67 | USD | 20250929 |
| Jinan Angxin Chem | China national standards | MT | 562.18 | USD | 20250928 |