| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.32 | USD | 20251016 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.24 | USD | 20251015 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 197.2 | USD | 20251015 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 197.12 | USD | 20251014 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.16 | USD | 20251014 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.06 | USD | 20250925 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.06 | USD | 20250924 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.06 | USD | 20250923 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 203.92 | USD | 20250922 |