Product sorts: Long pillow type, Qu Nangshi and membrane-type three kinds. Use: Applies to the truck, the bus ,railroad vehicles and on the industry mechanical device, with rubber elasticity and the air pressure, obtain the comprehensive absorption of shock cushion performance, thus plays the load bearing load elastic support role. Superiors: service life of rubber air spring is higher than metal spring several dozens times; Contrasts the fatigue life experiment, Rubber air spring good manuscript 12 centimeters, above 3 million times, but the metal spring under 8 centimeter small travelling schedule, imitates 270,000 times. Loads distributions evenly, may increase the load-carrying capacity ,to be extremely soft. When shoulders the big,chassis to maintain steadily, rides felt comfortable, has quakeproof ,guards noise against function .each automobilism use, it may save 100 kilograms high quality alloy steel products, each train saves 600 -1000 kilograms alloy steel products .Product service life:3 million times.