| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 1240.0 | USD | 20251016 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 1239.52 | USD | 20251015 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 1239.07 | USD | 20251014 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 1239.31 | USD | 20251013 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 1238.6 | USD | 20251011 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 1237.59 | USD | 20250922 |
| Jinan Jinhao Chemical Co., Ltd. | China national standards | MT | 1237.95 | USD | 20250918 |