By Charles Riley, reporting from Hong Kong

President Obama and Mitt Romney each used their second presidential debate to talk tough on China.

Romney pledged that he would label China as a currency manipulator on his first day in office - a promise he frequently works into his campaign speeches. And he accused China of "stealing" designs, patents and technology pioneered by U.S. companies.

"There's even an Apple store in China that's a counterfeit Apple store, selling counterfeit goods," Romney said. "They hack into our computers. We will have to have people play on a fair basis."

Obama was more circumspect in his use of language, but he touted the trade complaints his administration has filed against China over auto parts. Obama also recently blocked the sale of American wind farm companies to a Chinese firm.