Two-dimensional air change: >The indoor air can be replaced by the fresh outdoor air Energy reclaiming function: >A built-in static heat exchanger, heat recovery efficiency up to more than 70% >Cooling and heating load (room temperature) can not be changed by the new fresh air, highly reduce the energy in handling fresh air. >Realize high-efficient and energy-saving. Air filter and cleaner: >The fresh air from the outside is filtered by the professional built-in filter, effectively prevent the dust and poisonous materials entering the room. So keep the room air fresh and clear. >Lonizing electronic air cleaner, air anion-generator, photocatalyst are also for optional. Acoustic-insulated design, safe and reliable >A built-in low noise centrifugal fan, the shell of the unit shrouded with new type sound-absorbing material. >Operate steadily, low noise, eliminate on-site interference. >No movable parts except fan in the integral unit, almost need no maintainance , ensure long-time and reliable use. Great variety, operate easily >A great variety of units, suits architecture building 15 1500m2 >Integrated structure, built-in heat exchanger, two fan ,filter, can be used after pluging in the power and trunk. Low cost and high efficient >No cold or hot souce supply, integrated struction lessen the work of the maintainance as well as the labor cost.