| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Kaijie Water Treatment Co., Ltd. | China national standards | MT | 210.95 | USD | 20250922 |
| Shandong Haihua Group Co., Ltd. | China national standards | MT | 168.76 | USD | 20250922 |
| Henan Kaijie Water Treatment Co., Ltd. | China national standards | MT | 210.89 | USD | 20250921 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 203.86 | USD | 20250921 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 182.77 | USD | 20250921 |
| Shandong Haihua Group Co., Ltd. | China national standards | MT | 168.71 | USD | 20250921 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 203.86 | USD | 20250920 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 182.77 | USD | 20250920 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 203.86 | USD | 20250920 |
| Henan Kaijie Water Treatment Co., Ltd. | China national standards | MT | 210.89 | USD | 20250920 |