The Odewind screw air compressor features include the screw rotor (main unit) imported from Germany, utilizing a third-generation asymmetric tooth profile with a ratio of 5:6 for the rotor, and a reasonable selection of length-to-diameter ratio. The tangential speed of its rotor is only 30-36 m/s, significantly lower than the typical 60 m/s tangential speed of general air compressors. The rotors maintain a 0.003 INCH gap without wear, with small tooth gap drop, resulting in minimal recirculation loss. This design improves efficiency by 10-12% compared to a 4:6 tooth profile, saves energy by 20%, and uses Swedish SKF bearings to greatly extend the main unit's lifespan.