... ISO, low thermal conductivity, used in the air-conditioning duct Rubber Foam Insulation Sheet: It is made from the nitrile -butadiene ... rubber (NBR) and polyvinyl chloride(PVC) as main raw material and ... :Board:thickness:5-40mm, Width:500-1200mm, length=1000mm,Pipe: tube thickness: 5,9,10,15,20,25,30mm, inner-diameter ...