silent double screw air compressor

We are a Chinese air compressor manufacturer. SANLIONis our a brand. SANLIONvariable frequencyscrew air compressor, made by Germanic airends. The depth oil/air separator, As Germany Hi-quality, best performance, good price! The Power range from 5.5KW(7.5HP)to 250KW(340HP) Working pressure from 7Bar(101.5PSI) to 13Bar(188.5PSI) Four-stage oil-gas dissociation system, patent technology of extremely low residual oil. Centrifugal cooling fan. High intelligent digitalized controller. Filtration elements imported from Germany Mann-hummel the parameter of SK-15DS--50DS series as follows: Model Exhaust PressureAir DisplacementMotor PowerNoiseInterfaceWeightBarPsiKg/cm2m3/minL/mincfmHPPowerdB(A)InchKgAC3-380V/50HZSk15 08 8 116 8.2 1.6 1600 56.5 15 11 60 G3/4 420 10 10 145 10.2 1.4 1400 49.4 15 11 60 G3/4 420 13 13 189 13.2 1.15 1150 40.6 15 11 60 G3/4 420 Sk20 08 8 116 8.2 2.4 2400 84.7 20 15 60 G3/4 450 10 10 145 10.2 2.0 2000 70.6 20 15 60 G3/4 450 13 13 189 13.2 1.6 1600 56.5 20 15 60 G3/4 450 Sk25 08 8 116 8.2 3.2 3200 113 25 18.5 65 G1 540 10 10 145 10.2 2.7 2700 95.3 25 18.5 65 G1 540 13 13 189 13.2 2.2 2200 77.7 25 18.5 65 G1 540 Sk30 08 8 116 8.2 3.6 3600 127.1 30 22 65 G1 610 10 10 145 10.2 3.2 3200 113 30 22 65 G1 610 13 13 189 13.2 2.7 2700 95.3 30 22 65 G1 610 Sk40 08 8 116 8.2 4.5 4500 158.9 40 30 70 G1-1/2 750 10 10 145 10.2 4.1 4100 144.8 40 30 70 G1-1/2 750 13 13 189 13.2 3.6 3600 127.1 40 30 70 G1-1/2 750 Sk41 08 8 116 8.2 5.6 5600 197.7 40 30 68 G1-1/2 800 10 10 145 10.2 4.8 4800 169.5 40 30 68 G1-1/2 800 13 13 189 13.2 3.9 3900 137.7 40 30 68 G1-1/2 800 Sk50 08 8 116 8.2 6.8 6800 240.1 50 37 68 G1-1/2 880 10 10 145 10.2 5.8 5800 204.8 50 37 68 G1-1/2 880 13 13 189 13.2 4.8 4800 169.5 50 37 68 G1-1/2 880