| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 212.07 | USD | 20251204 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 353.44 | USD | 20251204 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 325.17 | USD | 20251204 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 791.71 | USD | 20251204 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 636.2 | USD | 20251204 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 424.13 | USD | 20251204 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 607.92 | USD | 20251204 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 212.07 | USD | 20251204 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 311.03 | USD | 20251204 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1244.12 | USD | 20251204 |