NBC is the mainstream radio and television network company in the United States, headquartered in Rockefeller Center, new york, with Peacock as its symbol. Currently, it is part of the media group NBC Universal, which provides programs to more than 200 American TV stations. NBC was founded by RCA in 1926 and by Chanove in new york in 10. 1986, its parent company RCA was acquired by GE (general electric company) and was also purchased. 2011/NBC was acquired by Comcast Corporation (Nasdaq: CMCSA), a cable TV, broadband network and IP phone service provider and content provider. For nearly 20 years, its president and CEO has been Bob Riegert. After merging with the entertainment department of Vivendi Universal Picture in 2004, NBC changed the original "NBC Company" to "NBC Universal Picture", but NBC still uses its full name in some programs. (ABC occasionally uses the full name of "ABC" in some of its programs and publications. NBC produces a large number of news, sports and entertainment programs and TV series every year, among which TV series such as Renyi, Friends and Will and Grace are well known to the audience in China. In addition, NBC participated in TVB's investment in Hong Kong in the mid-1960s, but held few shares, and later withdrew.