30kw 40HP 4bar Low Pressure Double-Stage Permanent Magnet VFD Screw Air Compressor

30kw 40HP 4bar Low Pressure Double-Stage Permanent Magnet VFD Screw Air Compressor. Two-stage compression design, higher efficiency at 4.0~5.5bar low pressure. IE4 PM VSD motor, saves 35%+ power vs fixed-speed low-pressure units. Avoid energy loss from high-pressure depressurization, tailor-made for textile. Optimized rotor profile, low exhaust temperature & long service life.