| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Dehe Chem | China national standards | MT | 1246.57 | USD | 20260602 |
| Zibo Dehe Chem | China national standards | MT | 1290.78 | USD | 20260529 |
| Zibo Dehe Chem | China national standards | MT | USD | 20260525 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260518 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260428 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260422 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260415 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260408 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260324 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260323 |