| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1000.38 | USD | 20251020 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 986.29 | USD | 20251020 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1000.72 | 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 | 1000.45 | USD | 20251016 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 986.36 | USD | 20251016 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1000.07 | USD | 20251015 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 985.98 | USD | 20251015 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 999.7 | USD | 20251014 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 985.62 | USD | 20251014 |