A new grain storage technology, which is environmentally friendly and pest free, has been tested at grain depots in Yunnan, Hebei, Sichuan, Jiangxi, Hubei and Henan, reported China Radio International Tuesday.

The two core technologies of the system are ozone controlled atmosphere storage and grain mass three dimensional ventilation to control the moisture content of stored grain.

Experts on grain storage believe this technology will save billions of yuan in grain storage costs once it's generally applied.

It will also provide a reliable technology for reducing and eliminating the aging of grains and ensuring grain security.

China has an annual grain production of 450 million tons, half of which needs drying treatment.

(Xinhua News Agency September 7, 2004)