... mechanical belt lock,5,adopt thick aluminium foil and recovery heat with with the height of the bellows being ... 2.0mm, wide surface area of transferring heat, high heat recovery. ( function(){ var aBigImageSrc = [ 'http://i01.i.aliimg.com ... run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Rotary heat recovery equipment, with cooling, heating system, filter function