| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 396.12 | USD | 20251211 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 396.12 | USD | 20251211 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 395.77 | USD | 20251205 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 395.77 | USD | 20251205 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 395.74 | USD | 20251203 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 395.74 | USD | 20251203 |
| Changzhou Yihan Chemical Co., Ltd. | China national standards | MT | 395.71 | USD | 20251201 |
| 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 |