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| NCC ventilation system is natural system,with variety of design it has very good effect. The principle is to make use of heat.Difference in-out door fresh air is such from low area fo the building,hot air goes up to be dischanged by ventilator. Secondly when the nature air flows around the building,positive pressure area and negative pressure area are produced,so the air could be inhaled from positive position and be evacuated from ventilator in negative position. Comparing with electric ventilation,the advantage of Nature ventilation system is as following: ¡ópower ¡ócost-effective ¡óless cost of maintenace ¡óquiet | ||||||||||||||||||||
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NCC-A ventilator normal type
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