| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.4 | USD | 20251022 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 634.21 | USD | 20251022 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.34 | USD | 20251022 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 789.24 | USD | 20251022 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1057.02 | USD | 20251022 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.4 | USD | 20251022 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 352.46 | USD | 20251021 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 507.54 | USD | 20251021 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 507.54 | USD | 20251021 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 535.74 | USD | 20251021 |