With the growing "220V Cooling Fan" manufacturing industry competition, large cooling fan manufacturers merger integration and capital operation is becoming more frequent, more and more attention to domestic outstanding cooling fan manufacturers market research on the industry, particularly for industrial development depth study of environmental and product buyers. Because of the rapid rise of this, a large number of excellent cooling fan brand, from "220V Cooling Fan" demand characteristics of the forecast for the use of a wide range of small and medium large cooling fan, the product structure and manufacturing process is relatively simple, lower cost, Primary the pursuit of high efficiency, low noise, long life, and cheaper prices. Another is capital and technology intensive, complex product structure, long manufacturing cycle, complete and systematic also strong, and operated under high pressure, high temperature and high speed conditions, some even operating in harsh conditions, "220V Cooling Fan"users of the class DC fan have different requirements. Of the turbine and compressor DC fan drum and large through DC fan, the user is the main pursuit of high quality, high reliability, smooth operation and long life cycle.