1.sandwich PU panel for cold room 2.50mm,75mm,100mm,120mm,150mm,200mm. 3.Certificate, ... time 1.sandwich PU panelHigh quality2.Pu samdwist panel for cold room and freezeing room:3.thickness:50mm,75mm,100mm,120mm ... .16 to 0.22contact person :tom yu, cell :13583135836 walk-in Cold room -40~+20'C