| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 941.65 | USD | 20250926 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 942.9 | USD | 20250925 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1055.49 | USD | 20250925 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1055.49 | USD | 20250924 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 942.9 | USD | 20250924 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 942.9 | USD | 20250923 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1055.49 | USD | 20250923 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1054.76 | USD | 20250922 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 941.96 | USD | 20250919 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1054.44 | USD | 20250919 |