US Treasury Secretary Timothy Geithner and top Chinese officials on Wednesday promised to cooperate in tackling global economic problems. "I look forward to expanding our exports to China and expanding cooperation on the great range of economic and strategic issues we face around the globe," state media quoted Geithner as saying during talks with Chinese Vice President Xi Jinping. "Our top priority now is economic growth and recovery in the US and around the world," Geithner was quoted as saying by the German Press Agency "DPA". Xi, who is expected to be confirmed as China's next leader later this year, said Geithner's visit was "significant for the stability and development of China-US economic relations." Cooperation between the world's two largest economies is vital in the face of a "very complex and grim" global outlook, Vice Premier Wang Qishan was quoted as telling Geithner. China wanted to expand cooperation in trade, investment, finance and infrastructure to "spur the economy, increase jobs, and create more benefits for the people of the two nations," Wang said. Geithner was scheduled to meet Premier Wen Jiabao later Wednesday before travelling to Japan.