Why the Shelf Life about High Energy Biscuits can be 20 Years?

Generally, the high energy biscuits as emergency preparedness need to be long shelf life when placed at room temperature. And common high energy biscuits only can be placed at room temperature for about three years. While our high energy biscuits’ shelf life can reach about 20 years, Why?
1.Our high energy biscuits are compressed type biscuits, the texture high energy biscuits will be more compact, also not easy to absorb water, not easy to go bad.
2.The package of high energy biscuits is aluminized film plastic, can be limited to block the oxygen in the air, not easy to deteriorate.
3.Following high temperature and high-pressure sterilization, vacuum package, the high energy biscuits is suitable for long-term storage, the shelf life can reach up to 20 years. 

So, our high energy biscuits can be used in any survival situation requiring a concentrated, long life emergency ration. The Survival Biscuits require no preparation and may be eaten directly.