| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.24 | USD | 20251112 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 987.78 | USD | 20251111 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.34 | USD | 20251111 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.48 | USD | 20251110 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 987.92 | USD | 20251110 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.2 | USD | 20251109 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.78 | USD | 20251109 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.78 | USD | 20251107 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 988.2 | USD | 20251107 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1058.35 | USD | 20251106 |