| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 205.13 | USD | 20251211 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 198.06 | USD | 20251211 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.95 | USD | 20251205 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 197.88 | USD | 20251205 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 197.87 | USD | 20251203 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.94 | USD | 20251203 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.92 | USD | 20251201 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.37 | USD | 20251017 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 197.32 | USD | 20251017 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 204.32 | USD | 20251016 |