| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 189.04 | USD | 20250723 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 273.06 | USD | 20250723 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 279.88 | USD | 20250722 |