| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai | China national standards | MT | 536.23 | USD | 20251106 |
| Zaozhuang Yitai | China national standards | MT | 535.96 | USD | 20251105 |
| Zaozhuang Yitai | China national standards | MT | 535.96 | USD | 20251105 |
| Zaozhuang Yitai | China national standards | MT | 543.13 | USD | 20251104 |
| Zaozhuang Yitai | China national standards | MT | 543.13 | USD | 20251104 |
| Zaozhuang Yitai | China national standards | MT | 543.27 | USD | 20251103 |
| Zaozhuang Yitai | China national standards | MT | 543.27 | USD | 20251103 |
| Zaozhuang Yitai | China national standards | MT | 543.17 | USD | 20251031 |
| Zaozhuang Yitai | China national standards | MT | 543.17 | USD | 20251031 |
| Zaozhuang Yitai | China national standards | MT | 543.29 | USD | 20251030 |