| Vendor | Spec | Unit | Price | Currency | Date |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 952.19 | USD | 20250723 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 951.58 | USD | 20250722 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 950.76 | USD | 20250721 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 951.08 | USD | 20250719 |