| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.65 | USD | 20251017 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.65 | USD | 20251017 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.54 | USD | 20251016 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.54 | USD | 20251016 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.39 | USD | 20251015 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.39 | USD | 20251015 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.25 | USD | 20251014 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.25 | USD | 20251014 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.05 | USD | 20250925 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 394.05 | USD | 20250925 |