GrafTech International built its early reputation by supplying arc lights to Cleveland in the early 1900s -- making that city the first in the U.S. with electric street lights. Later, the company made it big in steel-making and continues to be a leading producer of graphite electrodes used in arc furnaces. While industrial materials -- primarily steel-related graphite products -- constitute 85 percent of GrafTech's sales, the company is emerging as a high-tech innovator in Ohio's new economy, supplying graphite materials to fuel cell manufacturers, consumer electronics companies and others.