How long can plastic sausages be kept in foam boxes?

Winter 1 month or more, about 24 hours in summer. Plastic sausage foaming box can be stored for about 1 month at 0-4 degrees in winter in the south, and for more than 1 month in sub-zero weather in the north; Summer is hot, even if there is an ice pack in the foam box, it can only be stored for about 24 hours in the weather of more than 30 degrees.