| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1057.1 | USD | 20251017 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 986.62 | USD | 20251017 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 944.09 | USD | 20251016 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1056.81 | USD | 20251016 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1056.41 | USD | 20251015 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 943.73 | USD | 20251015 |
| 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 |