| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1046.88 | USD | 20251211 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1046.88 | USD | 20251211 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1060.03 | USD | 20251210 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 989.36 | USD | 20251210 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1059.73 | USD | 20251209 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 989.08 | USD | 20251209 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 989.2 | USD | 20251208 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1059.86 | USD | 20251208 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1060.09 | USD | 20251207 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 989.41 | USD | 20251207 |