| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 563.21 | USD | 20251014 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 563.32 | USD | 20251013 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 563.0 | USD | 20251011 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 562.54 | USD | 20250922 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 562.71 | USD | 20250918 |