Unlike most studies that calculate productivity as a residual, this study uses detailed plant-level data to examine the relationship between exposure to foreign markets and specific innovations including product design, investment in new tools (such as computers), research and development, and innovation in products and processes. The results suggest that exposure to foreign markets is positively related to most types of technology. The effects seem to be stronger in recently liberalized Mexico, which may suggest that the innovation gains from liberalization are greatest in the early stages of liberalization.