| Vendor | Spec | Unit | Price | Currency | Date |
| Chifeng YunnanCopper | China national standards | MT | 186.46 | USD | 20260409 |
| Chifeng YunnanCopper | China national standards | MT | 186.37 | USD | 20260408 |
| Chifeng YunnanCopper | China national standards | MT | 185.9 | USD | 20260407 |
| Chifeng YunnanCopper | China national standards | MT | 185.7 | USD | 20260403 |
| Chifeng YunnanCopper | China national standards | MT | 188.6 | USD | 20260403 |
| Chifeng YunnanCopper | China national standards | MT | 185.83 | USD | 20260402 |
| Chifeng YunnanCopper | China national standards | MT | 185.83 | USD | 20260402 |
| Chifeng YunnanCopper | China national standards | MT | 188.73 | USD | 20260402 |
| Chifeng YunnanCopper | China national standards | MT | USD | 20260401 | |
| Chifeng YunnanCopper | China national standards | MT | USD | 20260401 |