MRC, Inc. (MRC) was established by Eui Joong Hwang (1927-2016) in 1961 in Busan, Korea. MRC manufactures internal communication and broadcasting equipment for marine applications, such as public address systems, auto telephone systems, talk-back systems, marine clock systems, and communal aerial systems for several kinds of vessels. MRC occupies around 75% of the Korean shipbuilding market, and exports internal communication systems to Japan, China, Taiwan, Singapore, Vietnam, India, and countries in the Middle East.