Material
Galvanized steel
Surface
By anodic oxidation, baking vanish oxidation or electrostatic spraying
Factory certificated
ISO9001:2008; ISO14001:2004; GB/T 28001-2001
Size and color
According to the duct size, customerized
Blade
At the range of 0 degree to 90 degrees manually
Operating Sensor
None; 70 degrees; 150 degrees; 280 degrees
Air Leakage
Less than the national standards