OPT Holding, Inc. is an electronic marketing (e-marketing) company. The Company operates in three business segments. The Marketing segment is engaged in the Internet advertising agency business, marketing operation support analysis, creative, SEO, site development, and video related services, among others. The Investment Training segment invests in the internet related venture companies. The Overseas segment is engaged in the marketing operation support in Asia, overseas investigation and development including support for Internet advertisement agency business, support for investee (mainly in China), information gathering in the United States.