| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 212.02 | USD | 20251206 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 353.36 | USD | 20251206 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 508.84 | USD | 20251205 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 791.53 | USD | 20251205 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 607.78 | USD | 20251205 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 212.02 | USD | 20251205 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1060.09 | USD | 20251205 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 424.03 | USD | 20251205 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 508.84 | USD | 20251205 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 212.02 | USD | 20251205 |