Much attention has been paid to industrial differentiation versus specialization. In EU, the phenomenon of secondary production is important enough since it absorbs 6.3% of the total output at basic prices. Through the development of new symmetrical indicators, we point out the ability of economic branches to diversify, penetrate and invade others. This analysis is applied both to EU countries and to economic system branches, focusing the analysis on the challenges facing Agriculture and Food and beverage industry. We can assume that the most advanced countries belong to a post-modern or post-industrial stage of development. The only way to continue to stay on the market is to diversify production and to emphasize the search for a quality/price ratio attractive for the consumer. On the contrary, less advanced countries of Central and Eastern Europe are rather in the initial or intermediate stages of industrialization in which agriculture, crafts and traditional services still have a certain importance and, as we know, undertake more differentiated activities. What emerges is a watershed between continental and Mediterranean countries. Eastern Europe is still anchored to a traditional behavior. In synthesis we find three fundamental trends: (a) a long period continuity of those complementary activities that have always characterized agriculture; (b) the different structure of secondary production in the EU countries; (c) different barriers to entry, that explain asymmetries in the behavior of branches otherwise more or less related. Remark that these barriers may be not only physical or economical but also normative, thus introducing more differences in the behavior of different countries.
