| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 323.72 | USD | 20251010 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.12 | USD | 20251010 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 211.12 | USD | 20251010 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 323.72 | USD | 20251010 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.12 | USD | 20251010 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 506.31 | USD | 20251009 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 506.31 | USD | 20251009 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 534.44 | USD | 20251009 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 632.89 | USD | 20251009 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 351.61 | USD | 20251009 |