What are these black ones under the newly bought freezer? I can't see them until I look in the mirror. Is this where the refrigerator bends?

The black part may be the compressor of the refrigerator, also called the condenser. The condenser is a part of the refrigeration system, which is used to cool the refrigerant and convert it into liquid, thus achieving the refrigeration effect in the refrigerator. Usually, the condenser is located at the bottom or back of the refrigerator.

Condensers usually consist of black pipes and aluminum fins to increase the surface area and better dissipate heat. In use, the condenser will warm up because it is generated when heat is discharged from the inside of the refrigerator to the surrounding environment.

So the black part you see is probably the condenser, which is a normal refrigerator part, which explains why you can only see it when you look in the mirror. If you have specific questions about the refrigerator or need further confirmation, it is recommended to consult the instruction manual of the refrigerator or contact the refrigerator manufacturer for more accurate information.