| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 351.83 | USD | 20250925 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1238.44 | USD | 20250925 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 788.1 | USD | 20250924 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1055.49 | USD | 20250924 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 211.1 | USD | 20250924 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 323.68 | USD | 20250924 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.1 | USD | 20250924 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 309.61 | USD | 20250924 |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 323.68 | USD | 20250924 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 605.15 | USD | 20250924 |