We examine the quality‐screening role played by intermediaries in international trade, exploiting export data at the product level for Chinese exporters. We uncover substantial heterogeneity among intermediaries, and distinguish two types: generalized and specialized intermediaries. We find strong evidence of a quality‐verification role for specialized intermediaries: they are more prevalent in products with greater quality dispersion among local exporters, and export goods of higher quality than do generalized intermediaries. Our results suggest that specialized intermediaries have the capacity to reduce the incidence of quality problems.