Abstract
In this paper, we estimate firm-level markups and test some micro-level predictions of a model of international trade with heterogenous firms and endogenous mark-ups. Our theoretical framework is an extended version of the Melitz and Ottaviano (2008) (MO) model which features both quality and spatial dierentiation across firms. In line with our model, we find that firm markups are positively related to firm productivity and negatively related to the toughness of local competition. Considering the relationship between firm markups and exports, we find evidence that the quality enhancing channel overbalances the price depressing channel of global competition.
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