... used for roof of prefab house, steel structure warehouse, factory, workshop, container house, etc.The width of the sandwich panel is 930mm, 950mm, and ... steel plate: 0.3 to 0.6mm Middle: PU board, EPS foam, rock wool, fiber glassThickness: 50mm, 75mm, and 100mm, 200mm ... warm keeping, and it is in low price Color Steel EPS Sandwich Panels