... aquaculture, poultry, pet fish, and trading fresh food.3.For the food: frozen fresh food, drinks, beer, fruits, and vegetables ... Place the ice bag in the freezer to frozen for 12 hours, then take it out to ... if the contents contact the eyes, skin, or fresh frozen items, you can clean them with water thoroughly. ... radiation, elastic and reusable.3. As a new frozen medium, there is no water pollution when it ...