| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Huijie Chem | China national standards | MT | 1648.51 | USD | 20251020 |
| Zibo Huijie Chem | China national standards | MT | 1648.63 | USD | 20251016 |
| Zibo Huijie Chem | China national standards | MT | 1648.0 | USD | 20251015 |
| Zibo Huijie Chem | China national standards | MT | 1647.72 | USD | 20251013 |
| Zibo Huijie Chem | China national standards | MT | 1646.77 | USD | 20251010 |
| Zibo Huijie Chem | China national standards | MT | 1645.52 | USD | 20251009 |
| Zibo Huijie Chem | China national standards | MT | 1645.82 | USD | 20250929 |
| Zibo Huijie Chem | China national standards | MT | 1644.92 | USD | 20250919 |