Bipolar Electronic Co., Ltd. was founded in 1990. Based on Ni-Zn series ferrite core, we specialize in making all kinds of ferrite core and sell to the manufactures of coils and transformers in the area of Europe and Asia.Bipolar Electronic Co., Ltd. is a professional manufacturer of Ferrite Core and Inductor. Our main products include Bobbin Core, Toroids Core, Bead, Choke, Common Mode Choke, etc. In addition, we also provide Power Choke, Chip Bead, EMI Filter, EMI Bead and AC Line Filter with superior quality and competitive price. If you are looking for high quality DC Line Filter, Ferrite Core Material and Ferrite Filters Manufacturer, please do not hesitate to contact us.