EPI (Holdings) Limited, an investment holding company, engages in the exploration and production of petroleum in Argentina, Hong Kong, and the People's Republic of China. The company primarily holds an interest in the Chañares Herrados concession located in the Cuyana Basin, Mendoza Province of Argentina. It also engages in money lending, and securities investment and management activities, as well as sale of energy. The company was formerly known as Great Wall Cybertech Limited and changed its name to EPI (Holdings) Limited in September 2006. EPI (Holdings) Limited is based in Wan Chai, Hong Kong.