While the structure of the ASEAN intergovernmental method is that each state has equal status. And has the sovereignty Powered corporate decisions and, therefore, is to slow. Despite the idea of trying to improve an organization, as a supranational, but there is no clarity is just to show the intent to modify the pattern. Lack of concrete practices that, while clearly the scope and characteristics. Factors which are different markets of the European Union. Will affect the speed. And the success of economic integration. For example, do not aim the ASEAN Customs Union (customs union) to use import tariffs as well. Countries external It also resulted in not quite the same one. And also have agreements with countries outside the group separately. The market factors Noticeable aspect is trade between the ASEAN countries themselves. Accounted for only 25%, while the EU. Before becoming the same market is approximately 55% and increased to 65% when combined. EU takes up to 25 years before the so-called free trade is truly the trade between members. Therefore, it is believed ASEAN seeks to customs procedures. I do not fast. One thing that businesses face as well. Liberalization, competition is increasing. Because the same market of all the countries in the region. What happened to the leading companies in Europe. May reflect what might happen Similarly in ASEAN. By leading companies in Europe to concentrate on its core business more dominant than the other business fields. In the region increased. Business in Europe Reduce costs by focusing on their core business advantage. And leverage the economies of scale (economies of scale) and the same markets to expand its business in different countries.