... using the most advanced semi-closed 5:6 screw compressor, motor, compressor seal leakage to non-integrated design, energy efficiency ... is not sensitive to humidity trip, very low failure rate; * Screw compressor failure-free operation up to 40,000 hours. ... Supporting the German and Swedish SKF FAG precision bearings; * Low vibration and low noise. * Compressor has been ISO9001, CRAA, CE, PED, UL and ...