| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | China national standards | MT | 211.63 | USD | 20251031 |
| Henan Huiyihai Environmental Protection Technology Co., Ltd. | 300 VOCs | MT | 211.63 | USD | 20251031 |
| Hebei Junshen Environmental Technology Co., Ltd. | 600 VOCs | MT | 310.38 | USD | 20251031 |
| Hebei Junshen Environmental Technology Co., Ltd. | 800 VOCs | MT | 423.25 | USD | 20251031 |
| Hebei Junshen Environmental Technology Co., Ltd. | 900 VOCs | MT | 606.66 | USD | 20251031 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | 1000 VOCs | MT | 634.88 | USD | 20251031 |
| Henan Sendi Environmental Protection Technology Co., Ltd. | China national standards | MT | 352.71 | USD | 20251031 |
| Henan Kaijie Water Treatment Co., Ltd. | 1000 VOCs | MT | 1241.53 | USD | 20251031 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | 800 VOCs | MT | 1058.37 | USD | 20251030 |
| Henan Qingmai Environmental Protection Technology Co., Ltd. | China national standards | MT | 790.25 | USD | 20251030 |