... XPS sandwich panel 1, light weight, high strength, 2, flat surface & high performance Heat insulation extruded polystyrene(XPS) sandwich panelsimple introduction: Structure:Structure: 2 ... roof, steel roofing insulation, etc., and the insulation effect is more remarkable2,Exterior wall insulation:3,Insulation,heat insulation,waterproofing4,Ground floor insulation:5,Cold storage building ...