| Vendor | Spec | Unit | Price | Currency | Date |
| Chifeng YunnanCopper | China national standards | MT | 219.56 | USD | 20260525 |
| Chifeng YunnanCopper | China national standards | MT | 219.38 | USD | 20260522 |
| Chifeng YunnanCopper | China national standards | MT | 219.46 | USD | 20260521 |
| Chifeng YunnanCopper | China national standards | MT | 219.31 | USD | 20260520 |
| Chifeng YunnanCopper | China national standards | MT | 219.38 | USD | 20260519 |
| Chifeng YunnanCopper | China national standards | MT | 219.19 | USD | 20260518 |
| Chifeng YunnanCopper | China national standards | MT | USD | 20260515 | |
| Chifeng YunnanCopper | China national standards | MT | USD | 20260514 | |
| Chifeng YunnanCopper | China national standards | MT | USD | 20260513 | |
| Chifeng YunnanCopper | China national standards | MT | USD | 20260512 |