... fish farms ,farm tank ,also used for massage spas . MINDER Brand " MVB" Vortex Blower is designed as per 110V/60HZ ,220V ... pools ,massage spas ,fish farms ,farm tank ,also used for air supply spare part of package ,glass products ,textile ,electroplating ,environmental ... in performance . Non-oil lubricating designs to produce mor purified air . The apperance is beautiful and modern ,the structure is ...