Purpose: For refrigerator: It can save electricity, keep food fresh and keep cold in condition of refrigerator being off electricity. For cold storage and transportation: It can be used for cold storage and transportation of biological product, vaccine, plasma, drug, poultry, coldwater fish, aquaculture product, edible bacteria, flower For food: Freeze and keep fresh food, beverage, beer, fruit, vegetable Directions: Put the icepack into the icehouse or refrigerator over 24 hours, apply when it refrigerated completely, it can be used many times. Attention: Avoid packaging damaged Never be eaten Characteristic: Harmless High cold capacity It can be used repeatedly.