| Vendor | Spec | Unit | Price | Currency | Date |
| Guizhou Wengfu | China national standards | MT | 3905.06 | USD | 20260327 |
| Guizhou Wengfu | China national standards | MT | 3909.87 | USD | 20260326 |
| Guizhou Wengfu | China national standards | MT | 3860.05 | USD | 20260325 |
| Guizhou Wengfu | China national standards | MT | 3765.88 | USD | 20260323 |