... /duration to 20 years,3,adopts 85 um special aluminium fin stock spoke, runner structure firm and stable, saving heat more ... belt lock,5,adopt thick aluminium foil and recovery heat with with the height of the bellows being 2.0mm, wide surface ... .minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Rotary heat recovery equipment, with cooling, heating system, filter function