Master Ad Public Company Limited, together with its subsidiaries, provides advertising services in Thailand, Hong Kong, and Vietnam. The company operates in two segments, Advertising and System Installation Service segments. The company provides street furniture comprising LED digital screens; out of home media services for highway, city center, business area, airports, and other spots; and system integration services for advertising and public transportation. It also provides media rental services; invests in advertising media; and distributes software and computer related products including system development, installation, and maintenance. Master Ad Public Company Limited was founded in 1988 and is headquartered in Bangkok, Thailand.