... for fish farms , farm tank , also used for air supply of spare part of package , massage bathtub ,. MINDER Vortex Blower is designed as ... /60HZ,220V/50HZ,220V/60HZ,380V/50HZ . The structure of the unit is well organized and reasonable .The flow is ... for fish farms , farm tank , also used for air supply of spare part of package , massage bathtub , glass products ,textile , electroplating ,environmental ...