this, different models, different air volume, the price is different. YJ-Z combined low-noise oil fume purifier is generally recommended now, and the combined oil fume purifier of Anhui Guo Mao Mechanical and Electrical Equipment Company is recommended, all of which are in line with national standards, and the installation is convenient, and the later maintenance is more convenient. The specific price depends on the data such as air volume you actually need to choose the model, and the price ranges from thousands to tens of thousands! I hope you can adopt my opinions and suggestions! thank you