| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 272.75 | USD | 20250731 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 265.76 | USD | 20250731 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 272.95 | USD | 20250730 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 279.95 | USD | 20250730 |
| Suzhou Zhaohua Chemical Co., Ltd. | China national standards | MT | 349.94 | USD | 20250730 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 265.95 | USD | 20250730 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 188.97 | USD | 20250730 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 272.69 | USD | 20250729 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 279.68 | USD | 20250729 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 188.78 | USD | 20250729 |