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Circuit Science is a Minneapolis, MN-based company in the Computers and Electronics sector.
Massive Audio is a Los Angeles, CA-based company in the Computers and Electronics sector.
Vulcan Electric Company is a Porter, ME-based company in the Computers and Electronics sector.
Munich Trade Fairs North America Corp. is a Chicago, IL-based company in the Computers and Electronics sector.
Headquartered in Southern California, DEI Holdings, Inc. is the parent company of some of the most respected brands in the consumer electronics industry. DEI Holdings is the largest designer and marketer in North America of premium home theater loudspeakers (sold under the Polk Audio and Definitive Technology brand names), and consumer-branded vehicle security and remote start systems (sold under Viper, Clifford, Python, Autostart and other brand names).