Jack Perkowski, who built an auto parts company in China, says he learned the hard way not to rely on accountants.

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Note: I would like to thank my nephew, Jeff Perkowski , who did the research and helped me to write this article.

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Teaching the class at Columbia created a strong incentive to do so, and this year I had the benefit of having Jeff Perkowski, my nephew who is a senior at University of Virginia, in Beijing on an internship.

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