| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 897.05 | USD | 20250807 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 869.02 | USD | 20250807 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 868.24 | USD | 20250806 |