Do Rich and Poor Countries Specialize in a Different Mix of Goods? Evidence from Product-Level US Trade Data
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Unit values of US imports at the product level reveal a substantial degree of vertical product differentiation among countries exporting to the US. This specialization is not apparent by looking solely at trade flows. Two trends stand out. First, the portion of US import products originating in
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美国国家经济研究局创建时间：
2001-09-01
