Various attractive tropical fruits are growing in all the tropics of the world.

However, no one can directly bring those fruits into Japan as they are.

Many countries are very alert on the invasion of foreign harmful insects accompanied by the fruits and put a strict plant quarantine system into practice.

In 1986, an effective insecticide EDB was prohibited to use worldwide.

That chemical was so important measures to control fruit fly before export.

But we had been developing the Vapor Heat Treatment (VHT) system jointly with Takenaka Corporation as an alternative.

And we just succeeded in treating Hawaiian papaya by VHT before the chemical is banned .

This is a starting point to handle tropical fruits of various countries.