| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.05 | USD | 20250924 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.05 | USD | 20250924 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.05 | USD | 20250923 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.05 | USD | 20250923 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 393.78 | USD | 20250922 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 393.78 | USD | 20250922 |