| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 324.49 | USD | 20251031 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 324.49 | USD | 20251031 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 536.12 | USD | 20251031 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1058.13 | USD | 20251031 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 790.07 | USD | 20251031 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 634.88 | USD | 20251031 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.71 | USD | 20251031 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 507.9 | USD | 20251031 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 352.71 | USD | 20251031 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.63 | USD | 20251031 |