| Vendor | Spec | Unit | Price | Currency | Date |
| Nantong Zhonghe Chem | China national standards | MT | 1784.91 | USD | 20250926 |
| Nantong Zhonghe Chem | China national standards | MT | 1787.3 | USD | 20250925 |
| Nantong Zhonghe Chem | China national standards | MT | 1787.3 | USD | 20250924 |
| Nantong Zhonghe Chem | China national standards | MT | 1787.3 | USD | 20250923 |
| Nantong Zhonghe Chem | China national standards | MT | 1786.07 | USD | 20250922 |
| Nantong Zhonghe Chem | China national standards | MT | 1785.51 | USD | 20250919 |