◆ Natural wind drives, operating in 24 hours of whole day .

◆ High sensitivity , slight wind or the range of temperature can drive the tubine 　 blade to turn around .

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

◆ Using complete senior axis bearing , no lubrication , solid , low fault rate .

◆ Corrosion resistance , acid and alkali proof , long service life .

◆ Electric shutters, could open and close automatically, low energy consumption, using conveniently.

◆ The shutters could choose 0-105 degrees adjustable shutters, control inside lighting and hooding casually.

◆ High galvanized sheet frame, with better shocking resistance function, anti-aging and anti-corrosion ,long time durable life.

◆ Wide application for breeding farm, greenhouse, factory, school, villa, office building and stadium, warehouse, workshop and so on.