ventilation fan---30inch/B

A:The frame adopts traditional processing techniques,very thin but strong.
B:Stainless steel frame with high anti-cautery
C:High intensity nylon part
D:Galvanized steel glass wind collecting device      
E:Newly distorted molding fan blade, reasonable blade angel, which can produce the biggest air flow
F:Pulley with more strengthening rebar, sandblast processed, improve aesthetics, eliminate stress, Increase strength. It has one more strengthened life

G:Adopted automatic belt up and tight so that it doesnt pine belt and drop belt, lower the fans F:ailure percentage.
Fans are made up of blade, motor, guard net, blade frame, backstop, shutter and etc. Motor starts and drives blade to generate air flow, shutter is installed as per the customers requirements.
Shutter opens automatically and closes automatically after the motor stops, prevent the dust to enter and influence of rain, snow and wind.