IBIDEN CO., LTD. is primarily engaged in the manufacture of electronic products. It operates in five business segments. The Electronics segment is engaged in the manufacture and sale of printed circuit boards (PCBs) and package substrates, as well as the design of PCB patterns. The Ceramics segment offers environment related ceramic products, special carbon products, fine ceramic products and ceramic fibers. The Construction Material segment provides housing equipment, melamine facing plates and decorative laminated sheets processing materials. The Construction Material segment is engaged in the design and construction of slopes, garden landscape and various facilities. The Others segment is involved in other business activities, including synthetic plastic processing, agricultural seafood processing, information service business, automobile transportation, oil marketing, investment, and financing. As of March 31, 2012, the Company had 47 subsidiaries and two associated companies.