The pump used in our soap dispenser is home-made peristaltic pump (it is with non-return function, we tested it by 2-second operation and 2-second closing down, and found its service life is over two hundred thousand times). While the foam disperser adopts the integrated hybrid air & liquid vacuum pump and we test it by 2-second operation and 2-second closing down, and found its service life is over three hundred thousand times.