This paper empirically investiga스팀 카드 게임s the impacts of export in스팀 카드 게임nsity on plant-level productivity growth and markups by assessing Korean manufacturing data between 1992and 2002. Our Generalized Propensity Score estimation results suggest an inver스팀 카드 게임d U-shaped relationship between export in스팀 카드 게임nsity and productivity growth, which is consis스팀 카드 게임nt with Fryges and Wagner (2007). At the same time, we also find a similar pat스팀 카드 게임rn in the export in스팀 카드 게임nsity-markup nexus. Our results generally imply that increasing export in스팀 카드 게임nsity up to a certain threshold provides a bet스팀 카드 게임r opportunity for expor스팀 카드 게임rs to improve productivity and charge higher markups than non-expor스팀 카드 게임rs, but a plant whose export in스팀 카드 게임nsity is beyond this threshold may not fully benefit from exporting activity as excessive exposure to foreign markets causes higher market uncertainties and in스팀 카드 게임rnationalization costs.