CM/G Series Medium Pressure Oil Free Screw Air Compressor High efficiency and energy saving For new machine, energy saving 15%-20% compared with piston air compressor. After the wear of piston ring and cylinder body, energy saving 30%-40% compared with piston air compressor. The saved electric charges for 2 years operation equals to the machine’s purchase cost. Box type design, no vibration, low noise, small size Fewer consumable parts, less cost Environment, oil-free design, ISO08573-1 oil-free certification Isothermal compression, low exhaust temperature, low water content of compressed air