Cold storage refers to a type of storage facility used primarily for preserving perishable items such as fruits, vegetables, and flowers. In CA cold storage, the atmosphere within the storage space is precisely controlled to maintain specific levels of temperature, humidity, and gas composition, such as oxygen, carbon dioxide, and nitrogen.

By controlling these factors, CA cold storage facilities can slow down the ripening and aging processes of stored products, thereby extending their shelf life. This preservation method helps reduce spoilage, maintain product quality, and allows for the storage of perishable items for longer periods, enabling better market distribution and reducing food waste.