... ice pack into freezer to be refrigerated in advance for 12 hours, and then use as refrigerating media when needed ... drug, plasma, vaccine, aquaculture product, and keeping-fresh food.2.For patients: lower temperature for fever, curb inflammation, alleviate pain, and phBHical therapy ... Put this product into freezer to be refrigerated in advance for 12 hours, and then use as refrigerating media when ...