| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.86 | USD | 20250916 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.43 | USD | 20250915 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1042.14 | USD | 20250909 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.83 | USD | 20250908 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.31 | USD | 20250906 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.31 | USD | 20250905 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1040.95 | USD | 20250902 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.2 | USD | 20250901 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.81 | USD | 20250829 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.33 | USD | 20250828 |