... 's used for fish farms , farm tank , also used for air supply of spare part of package , massage bathtub ,. MINDER Vortex Blower ... 's used for fish farms , farm tank , also used for air supply of spare part of package , massage bathtub , glass products ,textile ... in performance.Non-oil lubricating designs to produce more purified air.The appearance is beautiful and modern, the structure is reasonable ...