| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai | China national standards | MT | 1054.82 | USD | 20251009 |
| Zaozhuang Yitai | China national standards | MT | 1055.02 | USD | 20250929 |
| Zaozhuang Yitai | China national standards | MT | 1054.08 | USD | 20250926 |
| Zaozhuang Yitai | China national standards | MT | 1055.49 | USD | 20250925 |
| Zaozhuang Yitai | China national standards | MT | 1055.49 | USD | 20250924 |
| Zaozhuang Yitai | China national standards | MT | 1055.49 | USD | 20250923 |