CONVUM? is a coined word, CON means with compressed air, VUM means generate a vacuum pressure.CONVUM? is a vacuum generator that uses compressed air to generate suction (negative pressure). Compressed air is released (ejected) from the nozzle, therefore earning the name “ejector” or “ejector pump”. --PPWFA do new cooperation with convum, is committed to providing the increasingly powerful Chinese manufacturing with precision products such as vacuum suction cups, vacuum switching valves, vacuum pumps, etc.