| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai | China national standards | MT | 570.83 | USD | 20251017 |
| Zaozhuang Yitai | China national standards | MT | 563.63 | USD | 20251016 |
| Zaozhuang Yitai | China national standards | MT | 570.68 | USD | 20251016 |
| Zaozhuang Yitai | China national standards | MT | 570.46 | USD | 20251015 |
| Zaozhuang Yitai | China national standards | MT | 563.42 | USD | 20251015 |
| Zaozhuang Yitai | China national standards | MT | 563.32 | USD | 20251013 |
| Zaozhuang Yitai | China national standards | MT | 570.37 | USD | 20251013 |
| Zaozhuang Yitai | China national standards | MT | 570.04 | USD | 20251011 |
| Zaozhuang Yitai | China national standards | MT | 577.07 | USD | 20251011 |
| Zaozhuang Yitai | China national standards | MT | 569.6 | USD | 20251009 |