Doing business in China is no easy feat at the moment-at least not as easy as it was a few years ago. Surging labor costs, high environ- mental protection requirements and rising tax expenses have put many foreign enter- prises in a tight spot.
　　However, U.S. companies in China have reported widening profit margins in the past year and many are planning to expand throughout the country, according to the 2008 White Paper on American Business in China released by the American Chamber of Commerce in China (AmCham-China) in Beijing on April 28.

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