| Vendor | Spec | Unit | Price | Currency | Date |
| Guizhou Tianfu | China national standards | MT | 641.5 | USD | 20260428 |
| Guizhou Tianfu | China national standards | MT | 641.6 | USD | 20260427 |
| Guizhou Tianfu | China national standards | MT | 640.71 | USD | 20260424 |
| Guizhou Tianfu | China national standards | MT | 641.07 | USD | 20260423 |
| Guizhou Tianfu | China national standards | MT | 641.07 | USD | 20260422 |
| Guizhou Tianfu | China national standards | MT | 641.46 | USD | 20260421 |
| Guizhou Tianfu | China national standards | MT | USD | 20260420 | |
| Guizhou Tianfu | China national standards | MT | USD | 20260417 | |
| Guizhou Tianfu | China national standards | MT | USD | 20260416 | |
| Guizhou Tianfu | China national standards | MT | USD | 20260415 |