| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 806.38 | USD | 20251211 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.39 | USD | 20251209 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.49 | USD | 20251208 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.67 | USD | 20251207 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.67 | USD | 20251205 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.85 | USD | 20251204 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.61 | USD | 20251203 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.15 | USD | 20251202 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.55 | USD | 20251201 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.21 | USD | 20251128 |