| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 534.85 | USD | 20251011 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1055.62 | USD | 20251010 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 788.2 | USD | 20251010 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 309.65 | USD | 20251010 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 605.22 | USD | 20251010 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 422.25 | USD | 20251010 |
| 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 |