| Vendor | Spec | Unit | Price | Currency | Date |
| Xiangfen Longtengda Chemical Co., Ltd. | China national standards | MT | 843.27 | USD | 20250926 |
| Xiangfen Longtengda Chemical Co., Ltd. | China national standards | MT | 844.39 | USD | 20250925 |
| Xiangfen Longtengda Chemical Co., Ltd. | China national standards | MT | 844.39 | USD | 20250923 |
| Xiangfen Longtengda Chemical Co., Ltd. | China national standards | MT | 843.81 | USD | 20250922 |
| Xiangfen Longtengda Chemical Co., Ltd. | China national standards | MT | 843.55 | USD | 20250919 |