Electrical Steel Products Ltd.
Suppliers of Transformer laminations and End frames, We also manufacture Toroidal Cores and Cut Cores
http://members.lycos.co.uk/laurieweston/

CIBISOL s.r.l
Cibisol La gamma completa per l'avvolgimento elettrico e i trasformatori elettrici, ogni genere di accessori e componenti, ferriti, rocchetti, lamierino magnetico, telai, staffe, morsetti, vernici e resine, scatolini per inglobamento
http://www.cibisol.it/

Bison Cores & Electronics S/B
Bison Cores & Electronics is a manufacturer, and distributor of iron powder and magnetic cores for the electronics industry in Malaysia. It has been supplying iron powder cores to the United States in the last two years. The market has since grown to include countries in Asia such as Taiwan, China, and Hong Kong. Subsequently, our service has also expanded to include core coating and component assembly.
http://www.bisoncores.com

Skandinavian Transformer Sp. z o.o.
Skandinavian Transformer
http://www.skandinaviantransformer.com.pl/en/index.html

Rasquinha Electronics
Manufacturers of Round Toroidal Cores, Ring Cores, Rectangular Cores, Rectangular Toroidal Cores, Transformer Laminations, Strips, Mitered Strips, Current Transformer Accessories, Bare Coated Cores, Enamel Coated Cores, Mumbai, India
http://www.rasquinhatranscore.com/

Semsa Elektronik Ltd.
Manufacturer of air core coils, transformers and inductors built on toroidal, EI laminated, and ferrite cores as well as current transformers.
http://www.semsa.com.tr

Ease House Ltd
Manufacturer of chip inductors, chip beads, EMI cores, balun cores, rod cores, drum cores, degraussing coils, power transformers and power adaptor.
http://www.easehouse.com.hk/

Prismatic Engineering Private Limited, Bangalore, INDIA
Prismatic was set up in 1994, under the guidance of promoters with over 20 years experience in Electronics & IT. Over the years it has emerged as a well known manufacturer of Magnetic Components.
http://www.wind-it.com

IP Cores
Development of intellectual property cores for ASIC and FPGA designs. Security IP cores for variety of AES modes, including AES-GCM, AES-XTS, CCM. Flow-through cores for a variety of communication standards: 802.11i, 802.16e (WiMAX), MACSec.
http://www.ipcores.com

Yazoo Mills Inc.
Yazoo Mills Manufactures Paper Tubes and Cores, Label Cores, Converter Cores, Tape Cores, Mailing Tubes, Shipping Tubes, Spirally-wound Tubes, Cardboard Tubes, and Kraft Tubes
http://www.yazoomills.com