| Vendor | Spec | Unit | Price | Currency | Date |
| Yancheng SUPER Chem | China national standards | MT | 922.58 | USD | 20250818 |
| Yancheng SUPER Chem | China national standards | MT | 921.94 | USD | 20250815 |
| Yancheng SUPER Chem | China national standards | MT | 922.38 | USD | 20250814 |
| Yancheng SUPER Chem | China national standards | MT | 922.21 | USD | 20250813 |
| Yancheng SUPER Chem | China national standards | MT | 921.34 | USD | 20250812 |
| Yancheng SUPER Chem | China national standards | MT | 921.5 | USD | 20250811 |
| Yancheng SUPER Chem | China national standards | MT | 921.8 | USD | 20250809 |