China will run nearly 1,000 cargo trains to Europe in 2017, more than double the number from last year, as the Communist trading giant ramps up efforts to boost its dwindling exports.The cargo trains from southwest China's Chengdu city would be doubled, the Chengdu International Railway Services Company said on Monday.Chengdu, capital of southwest China's Sichuan Province, ran 460 cargo trains to cities in Poland, the Netherlands and Germany last year — more than any other Chinese city.