| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Dehe Chem | China national standards | MT | 1413.27 | 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 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260224 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260205 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20260126 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20251211 | |
| Zibo Dehe Chem | China national standards | MT | USD | 20251210 |