| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 987.92 | USD | 20251028 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.48 | USD | 20251028 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.11 | USD | 20251027 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 987.57 | USD | 20251027 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1057.41 | USD | 20251024 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 986.92 | USD | 20251024 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 987.06 | USD | 20251023 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1057.56 | USD | 20251023 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1057.02 | USD | 20251022 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 986.55 | USD | 20251022 |