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The PTR Group is a Herndon, VA-based company in the Computers and Electronics sector.
Circuit Technology Center is a Haverhill, MA-based company in the Computers and Electronics sector.
North Shore Speech is a Putnam Valley, NY-based company in the Computers and Electronics sector.
Arrow Cranehoist, Corp is a Santa Fe Springs, CA-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).