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WASHINGTON, Aug. 16 (Xinhua) -- The visit to the United States by Chinese Minister of National Defense Chang Wanquan will help sustain the "positive momentum" that has been achieved in the U.S.-China military-to-military ties, the Pentagon said Friday.

However, researchers say there are many areas for improvement in terms of disaster preparedness.

Yuan-denominated deposits decreased by 100.1 billion yuan in April, sending the outstanding account of yuan deposits to 97.83 trillion yuan by the end of last month.

The Chinese premier said China will enhance coordination with New Zealand on global governance and regional issues so as to promote regional peace and stability.

Statistics showed that two-way trade between China and Switzerland exceeded 30 billion U.S. dollars in 2011, a record increase of 50 percent compared with that of 2010. Despite the persistent eurozone sovereign debt crisis and uncertainties in the world economy, bilateral trade volume remained as high as 26.3 billion dollars last year.