As if Japan didn't have enough economic problems to overcome, officials in Tokyo have identified another worrying trend: lagging export growth to China.; Rapid gains in German shipments to China have caught their attention, with exports from the European powerhouse doubling in value since 2008 and reaching 74.5 billion euros ($82.5 billion) last year.; Japanese sales to China, the nation's biggest trading partner, crept up by just 3.3 percent over the same period. Japan still holds a solid lead though, with to 13.4 trillion yen ($109 billion) worth of shipments to China in 2014. To be sure, part of the weakness in ... (full story)