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U.S. tech firms under increasing scrutiny in China

U.S. tech firms under increasing scrutiny in China

The Silicon Valley economy is hot these days, but U.S. tech firms are feeling a chill in China.

Anti-monopoly investigators have raided Microsoft's China offices, and the government has banned Windows 8 from state computers. San Diego-based chip maker Qualcomm may face more than $1 billion in fines for allegedly overcharging customers for smartphone patent licenses. And the government is encouraging Chinese businesses to abandon IBM systems in favor of local products.

It seems that no large tech company is escaping government scrutiny.

Google services such as Gmail and Maps have been increasingly stifled this year by China's "Great Firewall"...