... saving heat more,4,adopt japanese runner-driven belt with special self-tensioning devices and mechanical belt lock,5, ... heat with with the height of the bellows being 2.0mm, wide surface area of transferring heat, high heat recovery. ( function(){ var ... productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Rotary heat recovery equipment, with cooling, heating system, filter function