Stainless Steel Roofing Automatic Ventilator

Roof ventilation fan is a combination of both natural and forced air ventilation system,which is made of high quality staintless steels ,It is an no powerfree spinning vantilation that can be operated only by natural wind ,without personnel operator or electric energy.It can help elimite the drippyand dirty air of room,also can prevent humid air into room and protect the indoor walling .

feature & advantage :1.zero cost and no power ,natural wind driving 24 hour of whole days 2.easy installation and long maintance 3.rotary stably ,quickly improve the inner environment of room 4.corrosive resistance ,acid and alkali resistance,long service life 5.Using complete senior axis bearing, no lubrication, solid, low fault rote

usage:it can be used in any kinds of industrial factory building within 22.5 angle,eigher in steel roofing or concrete roofing .Also it can be installed at gas dust outlet of theresidential area to eliminate Oil flavour.

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Hope to hear from your side and just wish to establish long business relationship with your company ,and we will give you the most favourable price.