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Since the merger in 2003, Square Enix has acquired several companies and created several subsidiary companies. To strengthen its wireless market, Square Enix acquired mobile application developer UIEvolution in March 2004, though it was sold in December 2007, and the company instead founded its own Square Enix MobileStudio in January 2008 to focus on mobile products. In January 2005, Square Enix founded Square Enix China, expanding their interests in the People's Republic of China.