| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Kunyu | China national standards | MT | 1238.48 | USD | 20250930 |
| Zibo Kunyu | China national standards | MT | 1237.88 | USD | 20250929 |
| Zibo Kunyu | China national standards | MT | 1236.79 | USD | 20250926 |
| Zibo Kunyu | China national standards | MT | 1238.44 | USD | 20250925 |
| Zibo Kunyu | China national standards | MT | 1238.44 | USD | 20250924 |
| Zibo Kunyu | China national standards | MT | 1238.44 | USD | 20250923 |
| Zibo Kunyu | China national standards | MT | 1237.59 | USD | 20250922 |
| Zibo Kunyu | China national standards | MT | 1237.21 | USD | 20250920 |
| Zibo Kunyu | China national standards | MT | 1237.95 | USD | 20250918 |