Over the past few years, foreign investment "24V DC Cooling Fan" quietly lost its leading position in the enterprise market share in China, behind domestic enterprises. In this regard, the United States has also launched 301 investigations, accused the government of domestic fans, mixed flow turbine manufacturers fill posts. China Wind Energy Association staff told reporters that the main reasons contributing to this change is because the domestic wind power market grew faster last year, has become the world's largest wind power market, the huge increase in market capacity, so that the rapid accumulation of domestic enterprises by means of the acquisition of technology, etc. launched its own "24V DC Cooling Fan" products. At the same policy of support, including VAT and business tax concessions, development subsidies. But the United States only in 2009, it is available to subsidize new domestic energy companies to more than 25 billion U.S. dollars. During the interview, most experts believe that the country "24V DC Cooling Fan" competitive advantage is due to the expansion of its scale advantages obtained by the cost, the price of foreign-funded lower than the 15% -20%.