... , non-anti-radiation, elastic and reusable.3. As a new frozen medium, there is no water pollution when it is thawing ... and transport various biological frozen reagent, such as paste, poultry medicines, pharmaceuticals, plasma, vaccines, aquaculture, poultry, pet fish, and trading fresh food ... ice bag in the freezer to frozen for 12 hours, you can use it as frozen medium for any food, drug according ...