Suitable for producing the indoor , outdoor heat exchanger of various kinds of air conditioners, it is the deep processed product that the air conditioner used the aluminium foil. Surface spread one have getting antiseptic kissing functionality with membrane layer of swimming skill in aluminium foil, prevent the aluminium foil from oxidizing in the course of using, a set of water bridge , blowing such defects as the white powder ,etc.. At the same time , can reduce a little windy to hinder , reduce the operation noise of the air conditioner , guarantee the long and steady hot exchange result of the air conditioner.