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Q: what is the working principle of the negative pressure fan?

Answer: the working principle of the negative pressure fan is: the main working principle of the negative pressure fan is to use air convection to achieve the purpose of ventilation. After the fan is operated, the rotation of the fan is used to discharge the indoor hot gas and suck the outdoor fresh air into the room. Within a certain space, the reasonable installation of fans can achieve a ventilation effect of more than 90%. It is an ideal ventilation equipment for some large places, such as factory workshops, greenhouses, farms and other large places.