| Vendor | Spec | Unit | Price | Currency | Date |
| 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 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1040.67 | USD | 20250827 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1039.5 | USD | 20250826 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1039.9 | USD | 20250825 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1037.56 | USD | 20250823 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1037.56 | USD | 20250822 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1038.06 | USD | 20250821 |