... easy. the PU panel with concave-convex notch and crank lock,easy assemblePU foam panel for cold roomThe insulation panel, made of polyurethane, covered ... difference and help to reach the most efficiency for freezing and cold systems. Since the scientific, simple design and practical ... , pattered aluminum plate, colored steel plate. 3. Thickness: 60, 75, 100, 120, 150, 180, 200mm.1. Density 40~43kg/ ...