Natural ventilation is the use of natural air convection, any parallel to the direction of air flow into a bottom-up speed and vertical air flow to improve indoor ventilation effect of a device. It is not electricity, no noise, long run, eliminate indoor heat, moisture and bad smell. Already very popular in developed countries, for several decades, and in the country, with the advent of a large number of steel construction, install and use natural ventilation, is also increasing. It has the advantages are: 
 1, many industrial plants, in particular, color steel plate construction, poor cooling, hot summer, abnormal, resulting in low efficiency, product quality. Such as the installation of natural ventilation, which can be effective in improving indoor air quality to provide a comfortable working environment, improve work efficiency. 
 2, a number of industries, due to the production of the special nature of air pollution caused by factory, not only the quality of the environment is low, the long run, will harm the health of employees. However, the installation of a natural ventilation to improve indoor ventilation, can effectively protect the health of employees. 
 3, the number of fire accidents, people often choked by smoke damage, such as the installation of natural ventilation, can quickly exhaust a lot of smoke to escape give people more space, so it is a safety device. 
 4, the Earth's resources have been extremely poor, and environmental pollution is getting worse. Such as the installation of natural ventilation, can save a lot of energy, is a practical environmentally friendly products. 
 Why Wing excellent brand ventilators: Shanghai Yi Sheng Building Materials Co., Ltd. is the manufacturer of the earlier, the main products are: excellent 300 Wing, 500 Wing excellent, excellent 600 Wing, 680 Wing excellent four specifications. 
 The idea is as follows: Rotor Wing superior technology turbine ventilation function of the technical action: turbine ventilation is to promote the use of natural wind blade operation, the centrifugal force generated by operations to induce air flow, due to very thin leaf, even if faint breeze also makes it rotate . Turbine rotates, centrifugal force will be generated will be below the hot air turbine, flue gas, wet gas to suck it up and discharge. Air is pulled out of the turbine, the turbine's low pressure area is formed under the convenient, that the chimney effect. 
 Continue to turn the turbines, outdoor fresh air will keep the flow, so to achieve the purpose of ventilation.