Ball BearingRotary Screw Compressor 3-in-1 Combined with Tank&Dryer Double S 50HP 7-13bar (101.5-217.5PSI) Chinese Manufacturer for Oil & Gas Industry 19-353cfm, Find details about China Screw Air Compressor, Air Compressor from Rotary Screw Compressor 3-in-1 Combined with Tank&Dryer Double S 50HP 7-13bar (101.5-217.5PSI) Chinese Manufacturer for Oil & Gas Industry 19-353cfm