| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.67 | USD | 20251106 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 324.56 | USD | 20251106 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 211.67 | USD | 20251106 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 352.78 | USD | 20251106 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 508.01 | USD | 20251106 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 508.01 | USD | 20251106 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 536.23 | USD | 20251106 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 606.48 | USD | 20251105 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 507.75 | USD | 20251105 |
| Henan Leavit Chemical Technology Co., Ltd. | 600 VOCs | MT | 352.6 | USD | 20251105 |