| Vendor | Spec | Unit | Price | Currency | Date |
| Hunan Qilu New Materials Technology Co., Ltd. | China national standards | MT | 1257.9 | USD | 20251210 |
| Hunan Qilu New Materials Technology Co., Ltd. | China national standards | MT | 1257.97 | USD | 20251205 |
| Hunan Qilu New Materials Technology Co., Ltd. | China national standards | MT | 1257.44 | USD | 20251127 |
| Hunan Qilu New Materials Technology Co., Ltd. | China national standards | MT | 1270.54 | USD | 20251107 |
| Hunan Qilu New Materials Technology Co., Ltd. | China national standards | MT | 1268.52 | USD | 20251017 |
| Hunan Qilu New Materials Technology Co., Ltd. | China national standards | MT | 1224.52 | USD | 20251010 |