| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Qixiang Chem | China national standards | MT | 787.56 | USD | 20250922 |
| Zibo Qixiang Chem | China national standards | MT | 843.81 | USD | 20250922 |
| Zibo Qixiang Chem | China national standards | MT | 731.3 | USD | 20250922 |
| Zibo Qixiang Chem | China national standards | MT | 843.55 | USD | 20250919 |