| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 274.37 | USD | 20250901 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 253.26 | USD | 20250901 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 189.95 | USD | 20250901 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 281.57 | USD | 20250831 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 274.53 | USD | 20250831 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 274.53 | USD | 20250830 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 281.57 | USD | 20250830 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 190.06 | USD | 20250830 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 274.53 | USD | 20250829 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 281.57 | USD | 20250829 |