Nidec Tosok Corp. The Group's principal activity is manufacturing automobile parts. The Group also manufactures and assembles machines for semiconductors and subminiature circuits. Nidec Corporation, a manufacturer of small-scale spindle motors for hard disk drives is the major shareholder with 35.03% of issued stock. Automobile parts accounted for 50% of fiscal 2002 revenues; Motors, 20%; Semiconductor Manufacturing, 14%; Measuring Equipment, 13% and Other, 3%.