| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 212.21 | USD | 20251211 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 325.38 | USD | 20251211 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1061.03 | USD | 20251211 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 212.21 | USD | 20251211 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 424.41 | USD | 20251211 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1244.94 | USD | 20251211 |
| Guangzhou Longyu Chemical Co., Ltd. | Industrial Grade | MT | 353.68 | USD | 20251211 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 636.62 | USD | 20251211 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 792.24 | USD | 20251211 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 212.21 | USD | 20251211 |