| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1238.48 | USD | 20251004 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 211.1 | USD | 20251003 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 323.69 | USD | 20251003 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.1 | USD | 20251003 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1238.48 | USD | 20251003 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.1 | USD | 20251003 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.1 | USD | 20251002 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 323.69 | USD | 20251002 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 211.1 | USD | 20251002 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.1 | USD | 20251002 |