Table Ranking of the Cities with the PIBs greaters of the State of Par, for the years of 1999, 2003 and 2008 Elaboration: IDESP? Management of Studies and Socioeconmicas Research (2010) Source: IDESP, IBGE Although the biggest participation in the GIP of the State this associate to the sector of services, when we command the five first cities, three of them has greater weight attributed to the industrial sector, and the case of Barcarena, Parauapebas and Tucuru that if had specialized in on sectors to the transformation sector. Between the activities that explain this strong industrial dynamism for the set of the cities is had, the aluminum metallurgy and its leagues, production-distribution-consumes and activities of on workmanships to the energy sector, thermal treatment of steel and other derivatives and supply of these insumos the sectors correlatos and support, commercial manufacture of batteries for vehicles, construction and boats and for tourist ends, among others. 1.4OS TEN BIGGER CITIES IN TERMS OF VARIATIONS OF the GIP the pointer of variation of the municipal GIP discloses the level of importance of determined activities for the city, and most important it is that it allows to all carry through correlations on the dynamics and productive structure in the State, without this pointer we could not disclose the true importance of the GIP for the unit, in view of that in aggregate terms we could have one reduced participation between periods, given the reduced level of activity, but with raised sectorial contribution in importance, relative participation and degree of raised specialization, characterizing different dynamic activities (figure-3). Figure 3? Percentile variation of the Municipal GIP in the comparison of 2003 – 2008. Elaboration: IDESP? Management of Studies and Socioeconmicas Research (2010) For the three first cities that had presented greater percentile variation in the GIP, exists certain similarity in the productive structures of these cities, despite some of them represent small parcel in the contribution of the GIP, is resulted is expressive. .