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.
For the search engine, see Yahoo! Search. For other uses, see Yahoo (disambiguation). Yahoo! Inc. is an American multinational technology company headquartered in Sunnyvale, California. Yahoo was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 2, 1995. Yahoo was one of the pioneers of the early internet era in the 1990s. Marissa Mayer, a former Google executive, Google Employee number 20, and Google's first female Engineer, serves as CEO and President of Yahoo.