| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai | China national standards | MT | 1060.03 | USD | 20251210 |
| Zaozhuang Yitai | China national standards | MT | 1059.73 | USD | 20251209 |
| Zaozhuang Yitai | China national standards | MT | 1059.86 | USD | 20251208 |
| Zaozhuang Yitai | China national standards | MT | 1060.09 | USD | 20251205 |
| Zaozhuang Yitai | China national standards | MT | 1059.94 | USD | 20251201 |
| Zaozhuang Yitai | China national standards | MT | 1059.64 | USD | 20251127 |
| Zaozhuang Yitai | China national standards | MT | 1059.38 | USD | 20251126 |
| Zaozhuang Yitai | China national standards | MT | 1058.93 | USD | 20251125 |
| Zaozhuang Yitai | China national standards | MT | 1058.2 | USD | 20251121 |
| Zaozhuang Yitai | China national standards | MT | 1058.25 | USD | 20251119 |