Using firm and industry data, we establish two facts: (i) Uncertainty about demand conditions not only reduces export sales and exporting probabilities but also makes exports less sensitive to trade policy; (ii) the most productive exporters are more affected by higher industry-wide expenditure...

"Each of the world's largest retailers---Walmart, Carrefour, Tesco, and Metro---entered China after 1995. Their subsequent expansion in China may have influenced Chinese exports through two channels. First, they may have enhanced bilateral exports between the retailers' Chinese operations and...