| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.7 | USD | 20251118 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 310.49 | USD | 20251118 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1241.96 | USD | 20251118 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 606.86 | USD | 20251118 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 635.09 | USD | 20251118 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.83 | USD | 20251118 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 324.6 | USD | 20251118 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.7 | USD | 20251118 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 790.34 | USD | 20251118 |
| Henan Leavit Chemical Technology Co., Ltd. | 700 VOCs | MT | 536.3 | USD | 20251118 |