| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 507.24 | USD | 20251020 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 352.25 | USD | 20251020 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1240.33 | USD | 20251019 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 789.3 | USD | 20251018 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 535.6 | USD | 20251018 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 507.41 | USD | 20251018 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 507.41 | USD | 20251018 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 352.37 | USD | 20251018 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.37 | USD | 20251018 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 634.26 | USD | 20251018 |