| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 646.92 | USD | 20250922 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 646.72 | USD | 20250919 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 647.11 | USD | 20250918 |