Light weight: The total weight of the turbine exhaust device on the roof together with the base is about 15Kg/ seat, which is quite light, and it can be considered without thinking when designing the load of the steel structure.
分量轻盈： 涡轮排气装置于屋顶上连底座一并算总重量约15Kg/座，相当轻盈，在设计钢结构荷重时，可以不需思索。
Running installation: Using a high technical level of ball bearings, this bearing is completely closed and always self-smoothing, allowing it to rotate in gentle winds of less than 3.2Km/h.
运转安装： 采用高技术水准的滚珠轴承，这种轴承是完全封锁，而且永远自我光滑,使它能在低于3.2Km时速的和风下转动。
Strong and durable: the fan uses export bearings, which are smooth and wear resistant, and the blade support seat is made of stainless steel, which is acid and alkali resistant and corrosion resistant and has a service life of more than ten years.
坚固耐用： 风机采用出口轴承，免光滑、耐磨损、叶片支承座采用不锈钢制成，耐酸碱、防腐蚀、使用寿命十年以上。
The turbine exhaust fan is 24 hours non-stop, dust is not easy to attach, even if it needs to be cleaned, it is also very convenient.
涡轮排风机是24小时不停转，灰尘不易附著，即便需清洗也很方便。
Lighting: There is a gap between the blades and the light will enter the room, which can add 5-10% lighting degree to save electricity.
采光： 叶片与叶片之间有空隙光线会由此进入室内，可添加照明度5-10%节省电费。
High sensitivity: Only need to wind, can be all-weather operation, to achieve the purpose of exhaust air extraction.
灵敏度高：只需和风，即可全天候运转，到达排气抽风之目的。
Unpowered fans, although not often seen in our lives.
无动力风机，虽然不是我们生活中常常见到的。
But it brings great convenience to our life.
但是却为我们的生活带来了极大的方便。
Because of the unpowered fan, people can breathe clearer air and enjoy a healthier life.
由于有了无动力风机，人们可以呼吸到更清爽的空气，可以享用更安康的生活。