摘要：Recent research in international trade emphasizes the importance of firms’
extensive margins for understanding overall patterns of trade as well as how
firms respond to specific events such as trade liberalization. In this paper, we
use detailed U.S. trade statistics to provide a broad overview of how the
margins of trade contribute to variation in U.S. imports and exports across
trading partners, types of trade (i.e. arm’s-length versus related-party) and
both short and long time horizons. Among other results, we highlight the
differential behaviour of related-party and arm’s-length trade in response to
the 1997 Asian financial crisis.
关键词：Heterogeneous firms, Product differentiation, Product market entry and exit
