特意去查了一下FDA的规定如下：

来源: 凡人一个 于 2018-10-17 19:49:46 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读： 次 (254 bytes)

Freezing and storing seafood at -4F/-20C or below for seven days. Freeze at -31F/-35C or below until solid and storing at -31F/35C or below for 15 hours. Freezing at -31F/-35C or below until solid and storing at -4F/-20C or below for 24 hours.

加跟帖：

当前帖子已经过期归档，不能加跟帖！