Tungsram is a
Hungarian manufacturer of
light bulbs and
vacuum tubes since 1896. General Electric, in 1990, acquired majority share in one of Hungary's largest, oldest, and internationally most prestigious firms, the light-source manufacturer Tungsram. Over the past six years GE has invested $600 million in the venture and thoroughly restructured every aspect of its operations. It is the largest U.S. manufacturing investment in Central and Eastern Europe to date. It is now a subsidiary of
General Electric and its name is used as a
brand name only.