Why does the back of refrigerator rust?

The position of the refrigerator is unstable, and the refrigerator is in contact with furniture or other items.

1 Uneven refrigerator placement: When the refrigerator is placed on uneven ground, the wear and scratches on the metal surface will accelerate.

2. Contact between refrigerator and furniture or other items: The metal surface on the back of refrigerator is often in contact with other items, such as furniture, walls and floors. , will lead to rust.