| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1056.03 | USD | 20251014 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1056.23 | USD | 20251013 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 943.57 | USD | 20251013 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 943.02 | USD | 20251011 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1055.62 | USD | 20251011 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1055.62 | USD | 20251010 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 943.02 | USD | 20251010 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 942.31 | USD | 20251009 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1054.82 | USD | 20251009 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1055.52 | USD | 20251008 |