| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Yihan Chem | China national standards | MT | 565.88 | USD | 20251211 |
| Changzhou Yihan Chem | China national standards | MT | 565.35 | USD | 20251210 |
| Changzhou Yihan Chem | China national standards | MT | 565.38 | USD | 20251205 |
| Changzhou Yihan Chem | China national standards | MT | 565.34 | USD | 20251203 |
| Changzhou Yihan Chem | China national standards | MT | 565.3 | USD | 20251201 |
| Changzhou Yihan Chem | China national standards | MT | 591.97 | USD | 20251017 |
| Changzhou Yihan Chem | China national standards | MT | 591.82 | USD | 20251016 |
| Changzhou Yihan Chem | China national standards | MT | 591.59 | USD | 20251015 |
| Changzhou Yihan Chem | China national standards | MT | 605.45 | USD | 20251014 |