CEFEM is a Limited Company whose capital of 435 000 Euros is owned by the FANGIER family. CEFEMs development is based on two activities : Development and production of transformers, chokes and systems integrating electr......CEFEM is a Limited Company whose capital of 435 000 Euros is owned by the FANGIER family. CEFEMs development is based on two activities : Development and production of transformers, chokes and systems integrating electronic power Research and production of Visible Cut Switches within security boxes or by itself