| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 148.39 | USD | 20251201 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 155.38 | USD | 20251126 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 155.26 | USD | 20251124 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 155.2 | USD | 20251121 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 138.27 | USD | 20251121 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 138.21 | USD | 20251120 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 138.28 | USD | 20251119 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 138.31 | USD | 20251118 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 138.39 | USD | 20251117 |
| Changzhou Qinghong Chemical Co., Ltd. | China national standards | MT | 138.37 | USD | 20251114 |