| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 325.09 | USD | 20251207 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 508.84 | USD | 20251207 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 212.02 | USD | 20251207 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1243.83 | USD | 20251207 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 212.02 | USD | 20251207 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 508.84 | USD | 20251207 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 537.11 | USD | 20251207 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 353.36 | USD | 20251207 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 636.05 | USD | 20251206 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 353.36 | USD | 20251206 |