| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 1011.92 | USD | 20250928 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 1011.92 | USD | 20250926 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 1475.71 | USD | 20250926 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 999.2 | USD | 20250925 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 1012.57 | USD | 20250922 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 1012.26 | USD | 20250919 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 1012.26 | USD | 20250919 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 1012.87 | USD | 20250918 |
| Zibo Dehe Chemical Co., Ltd. | China national standards | MT | 1322.36 | USD | 20250918 |