| Vendor | Spec | Unit | Price | Currency | Date |
| Kunming Jiehua | China national standards | MT | 274.8 | USD | 20260327 |
| Kunming Jiehua | China national standards | MT | 275.14 | USD | 20260326 |
| Kunming Jiehua | China national standards | MT | 275.72 | USD | 20260325 |
| Kunming Jiehua | China national standards | MT | 275.59 | USD | 20260324 |
| Kunming Jiehua | China national standards | MT | 275.2 | USD | 20260323 |