| Vendor | Spec | Unit | Price | Currency | Date |
| Suzhou Zhaohua Chemical Co., Ltd. | China national standards | MT | 351.69 | USD | 20250918 |
| Suzhou Zhaohua Chemical Co., Ltd. | China national standards | MT | 352.02 | USD | 20250913 |
| Suzhou Zhaohua Chemical Co., Ltd. | China national standards | MT | 351.76 | USD | 20250901 |
| Suzhou Zhaohua Chemical Co., Ltd. | China national standards | MT | 351.32 | USD | 20250825 |
| Suzhou Zhaohua Chemical Co., Ltd. | China national standards | MT | 350.22 | USD | 20250820 |
| Suzhou Zhaohua Chemical Co., Ltd. | China national standards | MT | 349.94 | USD | 20250730 |