| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhi Tianji | China national standards | MT | 419.43 | USD | 20260327 |
| Changzhi Tianji | China national standards | MT | 419.95 | USD | 20260326 |
| Changzhi Tianji | China national standards | MT | 420.83 | USD | 20260325 |
| Changzhi Tianji | China national standards | MT | 326.36 | USD | 20260324 |
| Changzhi Tianji | China national standards | MT | 325.89 | USD | 20260323 |