And structural characteristics of the nonlinear damping rubber spring with a spring rubber TT, TT also has a metal coil spring and the carrying capacity of large deformation characteristics, its stability and load capacity than TT rubber springs, air springs structure simpler than the natural frequency Although higher metal spring but less than TT TT rubber springs. A unique structure, easy maintenance. TT composite spring 2, alternative metal coil spring, and have excellent damping effect. 3, to replace the anti-vibration rubber spring, but can withstand great loads. 4, can be replaced by stainless steel spring resistant to moisture, corrosion resistance and long service life. 5, suitable for bigger loads, low frequency vibration isolation system isolation springs 6, the collision does not produce sparks and metal, suitable for flammable and explosive environment. 7, with similar operating characteristic curve of the air spring, but the simple structure, no gas leak.