A: Use method: 1. Place the prepared ice pack in the freezer and freeze it into ice cubes. 2. The cooling effect can last about 6-8 hours, depending on the environment, and the insulation time with foam box can reach about 12-72 hours. After thawing, the contents will return to gelatinous shape and can be frozen again in the freezer for the next day. Repeated freezing and thawing, using more than 1000 times. Two: Product use: 1. Use cold compresses. 2. Long distance refrigerated transportation of various biological refrigerated reagents, plasma, vaccines, aquatic products, poultry, ornamental fish and foreign trade fresh food. 3. Cold storage and power saving: when the refrigerator is cut off, it can be put in the refrigerator room to prolong the freshness of vegetables and fruits in the refrigerator; Usually placed in the refrigerator, play a role in saving electricity. (Usage: Put the ice bag in the freezer until it freezes solid, then move it to the freezer, and put it in the freezer again after it dissolves into liquid. Repeat the operation in this way.) 4. Ice compress: physical cooling, fall injury, strain injury, etc. (Usage: Put the ice bag into the refrigerator freezer for about one hour, and then take it out and apply it to the face or other parts that want to cool down, it is very cool.)1) Cold storage gel: the product has good refrigeration effect and long freezing time 2) Repeated use: the product can be repeated use, repeated refrigeration 3) Thickened packaging: pressure resistant, waterproof, durable and good cold storage effect.