You are looking for Shandong ceiling fresh air ventilation machine it? Joan came wucheng Manager Wu Hao Tel: 18653444408 manufacturers offer new wind ventilators, ceiling fresh air ventilation machine price of new wind ventilators air heat recovery, according to the type of air heat exchanger can be divided into plate, plate-fin , Rotary, and other types of heat pipe, according to the nature of the recovery of heat into sensible heat recovery unit with total heat recovery system. Currently, the new wind ventilators on the market generally refers to a plate-fin heat recovery air significantly. Rotary total heat recovery also have a product, but because of higher prices, the application is also less. Plate (plate-fin), a wholly foreign long heat recovery products, but the price is higher, the domestic manufacturers are said to have been developed.