| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 992.66 | USD | 20251014 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 992.86 | USD | 20251013 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 991.53 | USD | 20251009 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 990.84 | USD | 20250928 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 991.48 | USD | 20250922 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 991.17 | USD | 20250919 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 991.77 | USD | 20250918 |