China has made a number of trade concessions to the US ahead of President Hu Jintao's visit next week.
Ms Wu has offered a number of concessions
Eager to smooth the way before Mr Hu's trip, Beijing has agreed to remove its ban on US beef and make it easier for US firms to bid for public contracts.
Also promising to clamp down on pirated goods, China's Vice-Premier Wu Yi made the pledges at talks in Washington.
It was separately announced that China is buying 80 additional 737 planes from US giant Boeing worth $4.6bn (£2.6bn).
US Commerce Secretary Carlos Gutierrez welcomed the successes of the latest Sino-US Joint Commission on Commerce and Trade meeting, but cautioned that proof would be in the implementation.
"The real outcome of this meeting, of course, will be known when we see the results," he added.
Ms Wu, the highest-ranking woman in the Chinese government, is currently touring the US at the head of a 200-strong delegation of Chinese businessmen.
Despite the trade concessions, she added that it was "unscientific and unfair" to put all the blame on Beijing for America's record $202bn trade deficit with China.