competitive price XPS sandwich panel 1, light weight, high strength, 2 flat surface and high performance Competitivle price building ... ~100mm(thickness)Features:1, light weight, high strength, flat surface , with installation advantages and high performance/price ratio ... 030 combustion(grade)B2Application range:1,Roofing thermal insulation: Flat roof, inclined roof, steel roofing insulation, etc., and ...