environment friendly and high-tech handle the outside air such as filter, purify and heat-exchange then transmit it into rooms

  It is a environment friendly and high-tech product and can handle the outside air such as filter, purify and heat-exchange then transmit it into rooms. Meanwhile, it filters, purifies and heat-exchanges the dirty indoor air then discharges it outside. By that, the room temperature will drop little.

 two-way breath, two-way filter, remarkable energy saving, easy operation, safety and reliability and low operation cost. The effective self-contained air filter can make the indoor air cleaner and fresher and discharge or supply almost all the air. Its heat recovery efficiency can reach 70%, so not only save energy but also protect the environment.