Changzhou Southern Electronic Element Factory Co.,Ltd is located in the city of Changzhou,which has a long history in Jiangsu Province.It is situated in the most active economic area in Yangtze River Delta Centre.The transport is very convenient. Expressway,Fast railways run though it.And it only takes one and half hours to reach Shanghai or Nanjing city.Airplane from here is through to major cities in China.
      Changzhou Southern Electronic Element Factory Co.,Ltd was founded in 1989.After several years' development and effort,it has invested and opened up three subsidiary companies,in Yancheng city, Huai'an city in Jiangsu Province ,and Lang'xi City in Anhui Province respectively. 
   

2 hollow inductance coil
 
(also known as bodiless coil or hollow coil, used for high-frequency circuits) without core, skeleton, and shield etc., but first in the mold around the good and then take off the mold and the coil ring between a certain distance.