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At present, humidifiers on the market are mainly divided into three types: ultrasonic type, hot steam type and pure type. The first two are spray type, and the latter is fog free type.

Ultrasonic humidifier is based on the principle of ultrasonic vibration humidification. It has high humidification efficiency and low price, so it is very popular in the market, but its radiation is relatively large.
The hot steam humidifier generates steam by heating water, which is simple in technology but high in energy consumption, cannot be dry burned, and has a relatively low safety factor.
The pure humidifier has filtering technology, so the use of ordinary water will not produce white powder. The water quality is clean, and it is not easy to condense scale, but the humidification effect is not as good as the first two.

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