With over 37,000 employees in 46 states, the District of Columbia, and Puerto Rico, GCA serves a variety of sectors, including K-12 schools, higher education, manufacturing, corporate office buildings, high-tech, bio-pharmaceutical, nuclear power, energy & utilities, defense, the rental car market, and others.arket Expertise. GCA Services Group focuses on clients where the quality of cleaning, safety, maintenance, and appearance is critical to the basic function of the establishment. We serve a wide variety of market sectors, including the following, with our vast expertise and superior quality.
Tokyo Tsushin Kogyo K.K. (Tokyo Telecommunications Engineering Corporation) was founded by Masaro Ibuka and Akio Morita in 1946. The company changed its name to Sony Corporatâ¦ion in 1958.
Sony's principal business operations include Sony Corporation (Sony Electronics in the U.S.), Sony Pictures Entertainment, Sony Computer Entertainment, Sony BMG Music Entertainment, Sony Ericsson and Sony Financial Holdings.As a semiconductor maker, Sony is among the Worldwide Top 20 Semiconductor Sales Leaders.ony Corporation is the electronics business unit and the parent company of the Sony Group, which is engaged in business through its five operating segmentsâelectronics, games, entertainment (motion pictures and music), financial services and other.