The normal growth of edible fungi and other plants requires corresponding temperature and humidity;

To store fruits and vegetables, it is necessary to control the temperature and humidity of the air to maintain the quality and freshness of agricultural products. Generally, the humidity should be controlled at 70-95% RH. Low relative humidity in the air can lead to an increase in fruit dry consumption and a decrease in quality level, thereby affecting revenue.

Food processing, such as bread, cake, and candy, requires the prevention of food cracking caused by low relative humidity in the air during both processing and storage.