| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.67 | USD | 20251111 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 635.0 | USD | 20251111 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.78 | USD | 20251111 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 790.22 | USD | 20251111 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1058.34 | USD | 20251111 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 211.67 | USD | 20251111 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1241.78 | USD | 20251111 |
| Hebei Junshen Environmental Technology Co., Ltd. | 700 VOCs | MT | 324.56 | USD | 20251111 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 310.45 | USD | 20251111 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 606.78 | USD | 20251111 |