| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 91.52 | USD | 20251014 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 91.54 | USD | 20251013 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 91.49 | USD | 20251011 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 91.49 | USD | 20251010 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 91.42 | USD | 20251009 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 91.48 | USD | 20250930 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 91.43 | USD | 20250929 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 91.35 | USD | 20250928 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 91.35 | USD | 20250928 |