1.Natural wind drives,operating 24 hours of whole day.

 2.High wind drives,sligh wind or the range of temperature can drive the blader to turn around,

 3.Rotary stablely,quietly to improve the inner environment of room.

 4.Using complete senior axis bearing,no lubrication solid,low fault cote.

 5.Corrosive resistance,acid and alkali proof,long service life.