| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Qinghong Chem | China national standards | MT | 91.35 | USD | 20250926 |
| Changzhou Qinghong Chem | China national standards | MT | 97.11 | USD | 20250925 |
| Changzhou Qinghong Chem | China national standards | MT | 97.11 | USD | 20250924 |
| Changzhou Qinghong Chem | China national standards | MT | 97.11 | USD | 20250923 |
| Changzhou Qinghong Chem | China national standards | MT | 97.04 | USD | 20250922 |
| Changzhou Qinghong Chem | China national standards | MT | 104.04 | USD | 20250919 |
| Changzhou Qinghong Chem | China national standards | MT | 104.1 | USD | 20250918 |