| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Hechun Chem | China national standards | MT | 584.55 | USD | 20251015 |
| Changzhou Hechun Chem | China national standards | MT | 605.45 | USD | 20251014 |
| Changzhou Hechun Chem | China national standards | MT | 605.57 | USD | 20251013 |
| Changzhou Hechun Chem | China national standards | MT | 601.35 | USD | 20251013 |
| Changzhou Hechun Chem | China national standards | MT | 615.08 | USD | 20251011 |
| Changzhou Hechun Chem | China national standards | MT | 619.3 | USD | 20251010 |
| Changzhou Hechun Chem | China national standards | MT | 619.3 | USD | 20251010 |
| Changzhou Hechun Chem | China national standards | MT | 618.83 | USD | 20251009 |
| Changzhou Hechun Chem | China national standards | MT | 618.94 | USD | 20250929 |
| Changzhou Hechun Chem | China national standards | MT | 619.8 | USD | 20250928 |