| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 606.73 | USD | 20251119 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 634.95 | USD | 20251119 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1241.68 | USD | 20251119 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1058.25 | USD | 20251119 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 352.75 | USD | 20251119 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 507.96 | USD | 20251119 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 507.96 | USD | 20251119 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.7 | USD | 20251118 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1058.48 | USD | 20251118 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 310.49 | USD | 20251118 |