SF(G) series are featured by low noise,large aie volume,eletcricity saving,rational structure and etc,whose blades are designed and made according to 3 Flow Theory.Choosen as ideal devices by many departments such as chemical,light industry,civil construction and high-class hotels,the series are applied to prevent sunstroke and lower temperature for the mining industry and the workshop storage,or used for pipeline pressure,the air supply,ventilation nd roof ventilation in general industry.Further more,according to users` needs,our company can also provide SF-Ⅰtype fixed status machine and SF-Ⅱtype adjustable status machine.