QTCG Public Company Limited constructs and installs mechanical, electrical, and plumbing systems in Thailand. It offers construction services for electrical and communications system, air conditioning and ventilating system, sanitary and plumbing system, fire protection and suppression system, and solar cell and renewable energy system, as well as operates asset management business. The company also develops, manages, and operates advertising media platforms; and offers digital media services, including the provision of advertising spaces and media management services for both online and offline channels. The company was founded in 2001 and is headquartered in Bangkok, Thailand.