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* Futures down: Dow 0.05%, S&P 0.18%, Nasdaq 0.07%

By Amy Caren Daniel

May 10 (Reuters) – U.S. stock index futures were muted on Friday, as expectations of a deal during the current round of U.S.-China trade talks blunted the impact from additional tariffs on Chinese goods coming into force.

The United States increased duties to 25% on $200 billion worth of Chinese goods and President Donald Trump said he would start the “paperwork” on Friday for 25% duties on another $325 billion in Chinese imports.

But even as Beijing threatened retaliation, negotiators in Washington agreed to stay on for a second day, encouraging investors that eventually a