Recently, the domestic largest water industry professionals network China's water network. Water district organization "2009-2010 blower equipment users satisfied with the equipment selection, our company" Changfeng "brand of Roots blower again won the award. The survey not only includes the domestic well-known fan manufacturers, but also covers the United States, Germany, France, Britain, Finland, Italy, Japan, Korea and other international brands. Survey data are all from the direct users and the Design Institute, not to the manufacturers to collect any fees, can be said to be a fair and authoritative evaluation. Investigation and analysis of the indicators "brand awareness", "brand usage," quality and customer satisfaction "," product satisfaction "," product price satisfaction "," product service satisfaction "," product operation satisfaction, "Changfeng" brand in the index are ranked top ten list, showing drum "Changfeng" brand strong competitiveness and users a high degree of recognition.