NBER Publications by Zhi Wang

As China's export juggernaut employs many imported inputs, there are many policy questions for which it is crucial to know the extent of domestic and foreign value added in its exports. The best known approach - the concept of "vertical specialization" proposed by Hummels, Ishii and Yi (2001) - is not appropriate for countries that engage actively in tariff/tax-favored processing exports such as China, Mexico, and Vietnam. We develop a general formula for computing domestic and foreign contents when processing exports are pervasive. Because this new formula requires some input-output coefficients not typically available from a conventional input-output table, we propose a mathematical programming procedure to estimate these coefficients by combining information from detailed trade statisti...

Chinese exports have become increasingly sophisticated. This has generated anxiety in developed countries as competitive pressure may increasingly be felt outside labor-intensive industries. Using product-level data on exports from different cities within China, this paper investigates the contributing factors to China's rising export sophistication. Somewhat surprisingly, neither processing trade nor foreign invested firms are found to play an important role in generating the increased overlap between China’s export structure and that of high-income countries. Instead, improvement in human capital and government policies in the form of tax-favored high-tech zones appear to be the key to the country's evolving export structure. On the other hand, processing trade, foreign invested firms, a...