New design, high efficiency, low wastage of energy, light weight, low noise, long duration and beautiful appearance. 

1. Application: poultry house, greenhouse, workshop and so on in the fields of Livestock Breeding, Agriculture, Flowers and Plants, Textile Industry, Mining, Chemical Industry, Pharmaceuticals Industry, Lumbering and so on.

2. Material of components:

1). Advanced frot double door opening device: small wind resistance, high efficiency. The rubber sealing effectively avoid the air backflow.

2). Lengthened cone: improving exhaust power, big air volume, low noise.

3). Imported bearing: high strength, low noise and long service life.

4). Shutter: made of high strength hot-galvanized steel sheet, antioxidant, light weigh and never distortions.

5). Belt tensioner: made of aluminium-magnesium alloy, extending service life and avoiding distortion.

6). Blade: 6 pieces of mirror finished and injection moulding Stainless Steel Blades, avoiding rust, big air volume, never distortion and broken.

7). Motor:high efficient and energy-saving, CCC Certificate. Protection class: IP55. Insulation class: F.

"Cooling pad+ventilation fan" tunnel ventilation is the most economical and efficient cooling way in summer. Reasonable desiign and installation of cooling pad with ventilation fan can control the temperature at 30 degrees in the house even at the hottest weather.