Roof ventilation performance mainly reflected? (1) The entire roof ventilators streamline arc-shaped design, roof ventilators 2, both to ensure the ventilator strength requirements, effectively reducing the body to withstand wind pressure ventilation; (2) roof ventilation through the use of large volumes of gas height and the arc is formed, effectively improve the collection and indoor air discharge capacity; roof ventilation performance mainly reflected? (3) step-up roof ventilation duct to collect roof air ventilators, wind pushed ventilators 2 to form a bottom-up, non-powered ventilators 2, discharge hot air upward actuated position; (4 ) at the top of the roof ventilator wind in any direction, the ventilator is bound to a suction outlet ventilation to improve the speed bump. Ventilators ventilators _ 2_ Flextronics no power ventilation 2 by the Liaocheng Flextronics ventilation equipment provided. Ventilators ventilators _ 2_ Flextronics no power ventilation 2 Liaocheng Flextronics ventilation equipment (www.lcwctf.com) (www.lcwctf.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel or pictures on this page, for the latest information, contact: Du Jingli.