| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 841.67 | USD | 20250821 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 840.52 | USD | 20250820 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 840.82 | USD | 20250819 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 841.26 | USD | 20250818 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 840.68 | USD | 20250816 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 840.68 | USD | 20250815 |