| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hengrui Chemical Co., Ltd. | China national standards | MT | 913.54 | USD | 20250927 |
| Shandong Hengrui Chemical Co., Ltd. | China national standards | MT | 885.43 | USD | 20250926 |
| Shandong Hengrui Chemical Co., Ltd. | China national standards | MT | 984.45 | USD | 20250922 |
| Shandong Hengrui Chemical Co., Ltd. | China national standards | MT | 914.4 | USD | 20250918 |