Freezing

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from this website: http://www.cubancigarwebsite.com/6-m....htm#Factories

Freezing

In addition to fumigation, freezing of the finished cigars is used to kill the tobacco beetle Lasioderma serricorne.

Freezing of cigars commenced around early 2005. It is carried out in the Habanos main temperature and humidity controlled storage and distribution building. This, combined with fumigation, is intended to kill all eggs, insects, and lava within the tobacco.

Some regional distributors had their own freezing facilities, predating the Habanos plant.

so it can be pretty much guaranteed that boxcodes after 2005 have been frozen