Is it normal to have frost in the freezing room? How to deal with it?

The temperature of the freezer is very low (about -18 degrees), freezing is normal
1. Manually deicing regularly;
2. It is recommended that food with excessive moisture be packed in a fresh-keeping bag and placed in the box;
3. Frequent opening and closing of the refrigerator door or the door is not closed tightly can also cause the freezing/frosting phenomenon of the freezer.
Note: The freezer of air-cooled refrigerators may have a trace of frost due to the use environment and storage conditions.