| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1039.9 | USD | 20250825 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1037.56 | USD | 20250824 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1037.56 | USD | 20250822 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1038.06 | USD | 20250821 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1036.65 | USD | 20250820 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1037.01 | USD | 20250819 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1037.55 | USD | 20250818 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1036.84 | USD | 20250816 |