... the aircraft and let the warm or cold air through. Flexible air hose for air conditioning device in airport is a new product developed ... , which is mainly used for transporting cool or warm air to air-plane. The product is approved by Aeronautical Industrial Group ... diameter: Φ80, Φ90, Φ100, Φ120, Φ180, Φ200, Φ250, Φ280, Φ300, Φ320, Φ340, Φ360, Φ450mm, meanwhile, we can also design and manufacture ...