It is composed of a rubber tube with a retractable corrugated outer layer and knitted fabric and other parts, and is connected to various types of masks as a gas channel. The airway has high flexibility and aging resistance. The airway and the mask have high strength. It is a connecting hose with good toxicity resistance and long service life. The tube is soft and has good elasticity and pressure resistance. It can also ventilate when bent 180°, and has a wide range of applications.
