Humidification can prevent static electricity caused by low relative humidity in the air, which may cause production equipment to crash and increase product defect rates. Dust free rooms such as electronic factories, semiconductor factories, and circuit boards are generally controlled at a constant temperature of around 22 ℃, so year-round air conditioning and temperature and humidity control are required to prevent static electricity, condensation, condensation, corrosion, fiber breakage, and discomfort for workers. Due to a relative humidity of over 60%, corrosion may occur; Below 40%, there will be static electricity. So usually, parts need to be kept in a specific temperature and humidity environment before entering the dust-free room to prevent condensation and condensation caused by temperature difference from damaging the parts due to moisture; Or static electricity can easily cause dust and impurities to adhere to the parts, affecting the quality and function.