... 1, light weight, high strength, 2 flat surface and high performance XPS heat insulation sandwich panelsimple introduction:The product ... insulation: Flat roof, inclined roof, steel roofing insulation, etc., and the insulation effect is more remarkable2,Exterior wall insulation:3 ... radiation has damaging effects on the XPS,such as deformed and sparkling.Avoid the direct sunlight exposure for a long time. ...