Malaysia has no track record of significant domestic ethanol production, so it is unclear where the ethanol blended with the U.S. product originates. I wonder

Malaysia has no track record of significant domestic ethanol production, so it is unclear where the ethanol blended with the U.S. product originates. I wonder if they sell the tanker of blended ethanol to the Chinese buyer, offload 60% of it, then buy back the remaining 40% of the load which is now clearly Chinese ethanol and head out to top off again.