The components also have a significant impact on fruit preservation. Altering the gas composition in the surrounding environment, such as reducing the oxygen content and increasing the carbon dioxide content, can slow down the metabolic rate and thus extend the storage time of fruits. After harvest, the process of fruit absorbing water from plant roots ceases, which can cause changes in structure, texture, and surface. Therefore, maintaining a certain level of humidity and reducing water loss are equally crucial for preserving the freshness and quality of fruits. To minimize the influence of humidity on the preservation of vegetables and fruits, large supermarkets often choose ultrasonic humidifiers for the preservation and humidification of vegetables and fruits, reducing water loss and maintaining their color and quality.

In the textile industry, achieving high-speed, fault-free operation throughout the production process and maintaining a continuous and stable relative humidity level is essential. The relative humidity in the textile workshop has a significant impact on the quality of the fibers and yarns during the production process. This is manifested in aspects such as moisture regain, tensile strength, elongation, and softness. Keeping the relative humidity in the textile workshop between 70% and 80% RH enhances the strength of the yarns, reduces the breakage rate, minimizes the occurrence of lint in the working environment, eliminates static electricity, and enables smooth progress of processes such as stretching, combing, and weaving, thereby increasing production efficiency and quality.