Guoen Holdings Limited, an investment holding company, provides integrated digital marketing services in Hong Kong, Taiwan, and the People's Republic of China. The company operates through Digital Advertisement Placement Services, Social Media Management Services, and Creative and Technology Services segments. It offers advertisement placement services through digital media; and provision of set-up, maintenance, and monitor services on corporate profile pages through the social media platforms. The company also provides design and copywriting of digital advertisements; and production of corporate profile pages, and website and apps, as well as provision of related consultancy services and marketing services.