i think it the fish and house and gold.
the biggest export out of japan is vehicles..cars and such..
japan
As of 2014, Japan's main export is cars. However, they also export a decent amount of electronic goods and crops.
they export balls
We can export lumber to them
China is now Japan's largest export market, Source - Wikipedia
Lube
rice
Australia
Automobiles
Naggers
modern technologies and hentai...