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"China and Argentina already have a rich history of cooperation in astronomy, starting in the early 1990s," he said, noting that the two countries jointly built a satellite laser ranging system in 2006 and a fixed global positioning system station in 2011.

"China has big companies and rich experience to push forward development in railways, roads, water conservation and energy in Argentina," Guelar said.

"China is such a big market that there is room for everyone," said Roberto Coronel Kronfle, of Industrial Pesquera Santa Priscila, an Ecuadorian shrimp company.

"China and the US share several common interests. Economic and trade cooperation is important for the development of both countries, and so promoting pragmatic cooperation will benefit both the Chinese and American people," said Wang Weizhong, Shenzhen Party secretary.

"Challenges remain, but the progress made in Doha provides hope and represents a real opportunity. The United States calls on all Afghans to seize this moment," Pompeo said.