In general, goods can be defined as objects, devices or things, whereas services can be defined as deeds, efforts or performances. Ultimately, the primary difference between goods and services is the property of intangibility - lacking physical substance. Recently, service industries span a wide variety of enterprises, from hamburgers to high technology. And the rules-based multilateral trading system so successful in reducing barriers to international trade in goods is now being expanded in the area of international trade in services. Therefore, the Korean Ministry of Trade, Industries and Energies has revised the Korea Foreign Trade Act and its Enforcement Ordinance to focus on expanding trade in service sectors, including transportation, communications, tourism services, and business services.