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It is a kind of air treatment equipment which realizes air treatment by a variety of air treatment function segments to meet the relevant requirements of users, according to different processing requirements, which can be equipped with primary effect filter, preheating section, back fan section, one return wind section, mixing section, secondary return air, heating, cooling and dehumidification, humidification, noise elimination, blower, medium efficiency fillet, and sub-high efficiency filter to realize the function such as temperature, humidity, cleanliness etc.The products are mainly used in various industries such as enterprises, business working, office, medical area etc. required to achieve artificial environment.