| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.6 | USD | 20251207 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.6 | USD | 20251207 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.6 | USD | 20251205 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.6 | USD | 20251205 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.97 | USD | 20251204 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.97 | USD | 20251204 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.48 | USD | 20251203 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1639.48 | USD | 20251203 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1638.56 | USD | 20251202 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 1638.56 | USD | 20251202 |