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Non-power roof fan
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Main performance l Natural wind drives, operating in 24 hours of whole day. l High sensitivity, slight wind or the range of temperature can drive the tubine blader to turn around. l Rotary stablely, quietly to improve the inner environment of room. l Using complete senior axis bearing, no lubrication, solid, low fault rocte. l Corrosion resistance, acid and alkali proof, long service life.
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