◆ Fast refrigerate, even the ice layer is thawing, there is still  beer output by cooking compressor. It  is unnecessary  to  put ice block into the water tank.
◆ The temperature is kept uniformaly by water beater, for sure  of the stability of beer output, and also good foam.
◆ By use cold water circulation device  to  reduce the influence  of beer temperature caused by normal air.
◆ By use well quality materials to keep  good heat  preservation  capability of water tank, reduce the lost of cold.
◆ By use purity water bounce-back unit to clean  out  the  remnant  of beer in beer tube, for sure the good quality and hygeian out beer.