| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Guoshun Chem | China national standards | MT | 1688.64 | USD | 20250828 |
| Changzhou Guoshun Chem | China national standards | MT | 1125.76 | USD | 20250828 |
| Changzhou Guoshun Chem | China national standards | MT | 1687.57 | USD | 20250827 |
| Changzhou Guoshun Chem | China national standards | MT | 1125.05 | USD | 20250827 |