Two way flow fresh air purifier / Fresh air fan

This fresh air fan is made from a new environmentally protective material, expanded polypropylene (EPP), which is lightweight and sound insulating. It can also be fully recycled and degrades naturally. Moreover, the innovative graphene heat exchanger greatly improves the heat exchange efficiency of the product while the five-layered progressive high-efficiency filter improves purification and sterilization capacity. The EC DC frequency conversion motor generates strong wind power and is equipped with a micro-positive pressure filter screen.