| Vendor | Spec | Unit | Price | Currency | Date |
| Jiangsu Shenrong Chem | China national standards | MT | 3089.69 | USD | 20251027 |
| Jiangsu Shenrong Chem | China national standards | MT | 3073.54 | USD | 20251024 |
| Jiangsu Shenrong Chem | China national standards | MT | 3058.32 | USD | 20251022 |
| Jiangsu Shenrong Chem | China national standards | MT | 3044.44 | USD | 20251017 |