http://www.azbeltech.com/gas-compressor/piston-gas-compressor/ Ultra-quiet hot-selling screw-piston industrial air compressor working principle: The compressor is mainly composed of fixed parts and movable parts. The fixed part consists of the fuselage, middle body, gasoline cover, cylinder, cylinder seat and other parts. The moving part consists of crankshaft, connecting rod, beam, piston, air valve and other parts, and is equipped with pipeline and instrument control system. Host introduction: 1. Domestic independent research and development 2. Bearings adopt world brands to reduce noise and prolong service life 3. High load-resistant design, advanced performance 4. Stable, firm and long service life 5. The rotor is manufactured by German processing