Famous brands of die springs are Raymond die springs, Raymond nitrogen springs, United Springs die springs and SPEC polyurethane springs.Raymond die springs include JIS (Japanese Standard) die springs, American Standard die springs, ISO (National Standard) die springs and other types. From the application range and quantity analysis: round cross-section wire coil spring in decline, shaped cross-section wire, especially flat and S, D, S-shaped wire cylindrical coil spring in the increase in rubber springs, especially polyurethane rubber springs tend to increase steadily, while the disc springs and nitrogen-filled gas springs are still in the small trial phase, it seems that there is a certain market, but from the springs of static and dynamic characteristics, the use of the maintainability and economics Comprehensive evaluation of its application prospects, yet to be practiced in the argument.