| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.76 | USD | 20251108 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1242.31 | USD | 20251108 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1058.78 | USD | 20251107 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 790.56 | USD | 20251107 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.76 | USD | 20251107 |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 324.69 | USD | 20251107 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 423.51 | USD | 20251107 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 536.45 | USD | 20251107 |
| Henan Leavit Chemical Technology Co., Ltd. | 500 VOCs | MT | 508.22 | USD | 20251107 |
| Henan Leavit Chemical Technology Co., Ltd. | 400 VOCs | MT | 508.22 | USD | 20251107 |