1. Turbine head, waterproof base plate and a middle seat

2. High quality 304 stainless steel or aluminum alloy materials are used for the body, fuselage and frame

3. The guide vane designed by the turbine is unique, which can make the rainwater flow down the river without water seepage and achieve 98% waterproof effect

4. The body fastener, main shaft and bracket are all 304 stainless steel products

5. The humanized variable angle design 300, 500, 600, 880 can be installed quickly and nimbly at the angle of 0 ~ 22.5

6. Special airtight adopts NSK / Harbin Bearing of Japanese Seiko, which can ensure the normal operation of the product under small wind force and maintenance free forever

7. The turbine exhaust fan only needs a breeze with a wind speed of 0.2m, and the indoor and outdoor temperature difference is more than 0.5c, so it can rotate light and effectively exhaust gas, and operate continuously