| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 280.42 | USD | 20250824 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 273.41 | USD | 20250823 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 280.42 | USD | 20250823 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 189.29 | USD | 20250823 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 273.41 | USD | 20250822 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 280.42 | USD | 20250822 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 189.29 | USD | 20250822 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 252.38 | USD | 20250822 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 273.54 | USD | 20250821 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 189.38 | USD | 20250821 |