1. Foamed-in-place high density polyurethane insulation. 2. Nature evaporator,Stop run to defrost. 3. Fully automatic mechanical temperature controller. 4. Safety shielded fluorescent interior. 5. Maximum ambient temperature under 37 ℃. 6. Automatic to heat for evaporating water condensed. 7. Interior is anodized aluminum.exterior white cold colored steel. 8. One pane top glass on three face,doors turned. 9. Completely sealed, low noise compressor. 10.digital thermometer. 11.Installed wheels. 12.Upper glass structure assembled to use, easy to transport. Warranty: One year on all parts,6 years on compressor.