Comment by thaumasiotes

OK... but I have followup questions.

Why does the minimum purchase price of corn in China not make corn oil, a derivative product, more expensive?

Why does the low price of soybean oil in the United States not make soybean oil cheaper in China?

If the reason corn oil is cheap in China is that it's imported separately from the grain and therefore immune to the price floor... wouldn't that imply that corn oil is also cheaper outside China?