These soft ferrite cores are extensively used in the field of computer, LAN, radio communication, OA facility, home appliance, illumination appliance and electric power tools etc. We have many product categories,that is :EE10/5.5/5,EE13/6/6,EE19/8/5,EE20/14/4,EC28/14/11,EC28/13/11,EPC13,EPC17,EPC19,and so on.You can send email  to me .I can send you our product contents.