Used extensively for oxyenatig for aquatic products cultivation and growth in fishing farm,seafood in resturant FEATURES:1.Fashionable appearance,non-oil lubricatedand convenient to operate;2.Double muffling shell,designed reasonably,low noise,low energy consumption and durable operation;3,Many specifications of pumps with air divides from four to eighteen;4.Used in aquarium shops,fish farms,koi ...