To keep the longetivity of your coffee bean use zipper bags - 0 views
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krista jackson on 24 May 12The zipper lock closures keep moisture outside and bad odors and freshness inside. One way degassing valve for coffee storage is the most important step. The coffee which is to be packed emits CO2 gas after 24 hours of roasting. This gas which may spoil the smell of the coffee is passed though the one way degassing valve and thus the smell of the coffee is maintained.