| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1020.85 | USD | 20250912 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1021.01 | USD | 20250909 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1020.21 | USD | 20250905 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1020.38 | USD | 20250904 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1019.85 | USD | 20250902 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1020.09 | USD | 20250901 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1020.7 | USD | 20250831 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1020.7 | USD | 20250829 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1020.22 | USD | 20250828 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1019.58 | USD | 20250827 |