| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | 85% | MT | 871.37 | USD | 20250926 |
| Shandong Yihe Fine Chemical Co., Ltd. | 85% | MT | 872.54 | USD | 20250925 |
| Shandong Yihe Fine Chemical Co., Ltd. | 85% | MT | 872.54 | USD | 20250924 |
| Shandong Yihe Fine Chemical Co., Ltd. | 85% | MT | 872.54 | USD | 20250923 |
| Shandong Yihe Fine Chemical Co., Ltd. | 85% | MT | 871.94 | USD | 20250922 |
| Shandong Yihe Fine Chemical Co., Ltd. | 85% | MT | 871.67 | USD | 20250919 |
| Shandong Yihe Fine Chemical Co., Ltd. | 85% | MT | 872.2 | USD | 20250918 |