How long can the food be stored with vacuum package?

The storage time for food can be prolonged greatly by vacuum package, and the detailed guarantee time is as follows:

Food	Storage rime without vacuum package	Storage time with vacuum package
In refrigerator
Meat like beef	6 months	2-3 years
Fish	8 months	2 years
Grain	8 months	2-3 years
Coffee beans	6-9 months	2-3 years
Lettuce	3-6 days	2-3 weeks
Bread	6-12 months	1-3 years
Pea	8 months	2-3 years