The product adopts electric magnetic motor; and the air is produced by piston in the way of straight- line and reciprocal motion and it has more reasonable structure. Non- oil lubrication and pure compressed air. Adopt SF1 new-type wearing-resistant material for the piston and cylinder; which is of low power consumption; large air output and high air pressure. The case ¡s made of high-quality ZL1O2 aluminum alloy with streamline design; and heat-dissipation is more effective. Phosphatize disposition; regular coloring and adhesive strength. Applications:It is used for planting aquarium plant; aerating for seafood in hotels; restaurants; seafood booths; and feeding pool etc. It is also used for air supply to spare parts of food machine; medical ¡instrument; belching lamp and new type paint; making and designing advertising LPG and LNG etc. NOTE:Place the machine above water level to protect water from flowing backwards; or it should be fit with a non- return valve.