Filter fan developed by Leizig can meet the ventilation in power and beverage industry demand. The product adopts wind and water two independent passageway, R800 arc, buckle type installation and other humanized structure design. It not only has beautiful appearance, but also reduces windage, and provides larger air volume, thereby improving the heat dissipation efficiency. At the same time the product using a variety of materials, new elements and high technology, after careful research and design improvement, has a series of advantages of advanced technology, excellent quality, safe use, low energy consumption, long service life, convenient cleaning and maintenance. It has gradually become the best-selling products in different regions.