| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 325.07 | USD | 20251210 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 537.08 | USD | 20251210 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 424.01 | USD | 20251210 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 607.75 | USD | 20251210 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 310.94 | USD | 20251210 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 212.01 | USD | 20251210 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 508.81 | USD | 20251210 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 353.34 | USD | 20251210 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1243.76 | USD | 20251210 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 508.81 | USD | 20251210 |