| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 788.1 | USD | 20250924 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 788.1 | USD | 20250923 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 787.56 | USD | 20250922 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 787.31 | USD | 20250919 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 787.79 | USD | 20250918 |