| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 791.01 | USD | 20251126 |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 324.88 | USD | 20251126 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 211.88 | USD | 20251126 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 508.5 | USD | 20251126 |
| Guangzhou Longyu Chemical Co., Ltd. | Industrial Grade | MT | 353.13 | USD | 20251126 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1059.38 | USD | 20251126 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 310.75 | USD | 20251126 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1243.01 | USD | 20251126 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 607.38 | USD | 20251126 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 536.75 | USD | 20251126 |