1. This diaphragm air pump uses a new generation of energy-saving technology to output more gas with lower energy consumption. The special synthetic rubber component is used, and the pressure and gas volume are constant. 2. Bedroom-level ultra-quiet silent diaphragm air pump provides optimal aeration for aquariums, water bulbs, and other products. Its high-pressure value and multiple cylinder compatibility make it the ideal gas source equipment for your aquatic needs.