Japanese exports to China exceeded more than $US 340 Billion

"Japan exported more than $340 billion last year to China, its biggest single trading partner....China is Japan's biggest trade partner and Japan is China's third largest"

Source:Japanese firms shut China plants, US urges calm in islands row

Mon Sep 17, 2012

Reuters

http://www.reuters.com/article/2012/09/17/china-japan-idUSL3E8KH23V20120917?type=marketsNews