Pu sandwish panel for cold room and freezeing room 50mm,75mm,100mm,120mm,150mm,200mm High quality Pu samdwist panel for cold room and freezeing room:thickness:50mm,75mm,100mm,120mm,150mm,200mmDensity of the pu foam: 40 to 42 Kg per cubic metermaterial: colored steel, stainless steel , aluminum,K: 0.16 to 0.22 cold room panel