| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 352.77 | USD | 20251103 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1241.76 | USD | 20251103 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.66 | USD | 20251103 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 634.99 | USD | 20251103 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.77 | USD | 20251103 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 790.21 | USD | 20251103 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1058.32 | USD | 20251103 |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 324.55 | USD | 20251103 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 423.33 | USD | 20251103 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 606.77 | USD | 20251103 |