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China joined the UN convention in 1994 and promulgated the world's first law dedicated to sand prevention and control in 2001. Most nations use regulations for this purpose
China ranks second in the world in terms of air passenger and cargo turnover, behind the United States.
China saw a goods trade surplus of 6.1 billion in the first three quarters.
China supports Papua New Guinea in holding the annual summit of Asia Pacific Economic Cooperation (APEC) this year, and is ready to enhance bilateral coordination and cooperation under the APEC framework, Wang said.
China launched its first cross-border rail freight service - between Chongqing and Duisburg in Germany - in March 2011. Since then, the number has risen to 51, connecting 27 Chinese cities with 28 destinations in 11 countries.
