| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Qingmai Tech | China national standards | MT | 240.5 | USD | 20251211 |
| Henan Qingmai Tech | China national standards | MT | 240.27 | USD | 20251210 |
| Henan Qingmai Tech | China national standards | MT | 240.2 | USD | 20251209 |
| Henan Qingmai Tech | China national standards | MT | 240.24 | USD | 20251208 |
| Henan Qingmai Tech | China national standards | MT | 240.29 | USD | 20251205 |
| Henan Qingmai Tech | China national standards | MT | 240.34 | USD | 20251204 |
| Henan Qingmai Tech | China national standards | MT | 240.27 | USD | 20251203 |
| Henan Qingmai Tech | China national standards | MT | 240.13 | USD | 20251202 |
| Henan Qingmai Tech | China national standards | MT | 240.25 | USD | 20251201 |
| Henan Qingmai Tech | China national standards | MT | 240.18 | USD | 20251127 |