Being familiar with the various methods of entrance into world markets is an important element helping the firms to be successful in achieving a more proportion of markets. In fact, such knowledge is used to overcome the uncertainty caused by the unknown environment of world markets and plays a key role for successful commercial decision makings. The main purpose of the study was to investigate the strategies used by the firms producing Iranian Poly Propylene products to enter into foreign markets. At first, using library studies, the strategies with which the firms are universalized were clarified and with the use of qualitative method in the firms exporting Poly Propylene products, such strategies were tested. Then, having prioritized the strategies, the most important motivations of managers for entrance into world markets were put into analysis. Based on the findings of the study, the strategies used by producing and exporting firms of the country are the followings: export, direct foreign investment, submission of authority for export, and strategic agreements. The results also show that the motives of managers for entrance into foreign markets are: sales increase, short-term profit, long-term profit, technological promotion, readiness for universalization and achievement to global success. Another finding of the research indicates that managers’ prudence can change into stable competitive advantage, promoting the firms’ performance. The other finding of the research is indicative of the relationship between managers’ commitment to export with their attitude towards attendance in world markets on the one hand, and with the indices of international performance on the other.