To save the desired temperature in the chamber for fruits and vegetables, as well as any food product, you need heat insulation, sealing and sterility. For airtight heat insulation we recommend polyurethane sandwich panels of galvanized steel with polymer coating and filler from polyurethane, fitting pieces of which provide tight connection between themselves as well as the opportunity to dismantle and re-installed without damage of joints of collapsible cold rooms. Sandwich panels of polyurethane foam are used at the construction of cold rooms, for warming of production rooms and small warehouses, and also at construction of subsidiary and technological structures.