In 2012, Tianrui launched a giant wind type ventilator for the world, with a large 900mm throat size, huge wind displacement, and scientific and reasonable structural design. It uses a vertical blade design to maximize horizontal wind drive, accelerate the turbine head speed, and obtain huge The siphon force makes the exhaust air volume larger, and the smoke exhausting capacity is super strong. It can selectively replace the smoke exhaust sunroof. The relatively small number of uses reduces costs while protecting against rain and dust. Variable angle pipe diameter design can be used for multi-angle roofing, easy to install. Lightweight aluminum alloy material, light weight, can run freely even at low wind speeds, stronger anti-corrosion performance. Japan's Asahi stainless steel non-lubricating bearings, longer service life. Mainly used in industrial and commercial premises. Effectively reduce indoor temperature, reduce indoor foul gas, and provide a good working environment. Special note: In order to meet the needs of customers in some cold regions, Tianruite has developed an open and close giant wind 900 model to effectively achieve warmth and ventilation.