We are ISO9001:2008 certification factory, which located in Anhui province( near to Shanghai). We have a research team consists of five engineers, engineering and technical personnel can quichly respond to make common mode choke samplrs, to ensure that customers can complete the sample machine test at the first time and provide strong technical and service support. Common mode chokes with base mainly used in electronic devices EMI radiated noise suppression, power supply, high frequency inductors, power transformers, etc.