China says the US needs to lift tariffs before a final trade deal

China said on Thursday that it expected the US to remove all of the tariffs on its products as part of any final trade agreement.
That cast another layer of uncertainty on trade progress announced by President Donald Trump last week. 
China has been slow to confirm details on key parts of the partial agreement with the US, which has not yet been put on paper.
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China said on Thursday that it expected the US to roll back tariffs on its produc