| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 394.39 | USD | 20251015 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 394.25 | USD | 20251014 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 394.33 | USD | 20251013 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 394.1 | USD | 20251011 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 393.78 | USD | 20250922 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 393.89 | USD | 20250918 |