| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.27 | USD | 20251016 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 634.09 | USD | 20251016 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.36 | USD | 20251016 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 535.45 | USD | 20251016 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 507.27 | USD | 20251016 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 507.27 | USD | 20251016 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 352.27 | USD | 20251016 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1240.0 | USD | 20251016 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 309.88 | USD | 20251015 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 605.68 | USD | 20251015 |