Generally, it is possible to buy it in local shopping malls, chemicals, cold drinks shops and hospitals. Dry ice is solid carbon dioxide, which is condensed into colorless liquid under the pressure of 6250.5498 kPa, and then rapidly solidified under low pressure. The history of dry ice can be traced back to 1823 Faraday and Derby in England. They liquefied carbon dioxide for the first time, and then Chirolet of Germany successfully produced solid carbon dioxide at 1834. But it was only used for research at that time and was not widely used.

Refrigerated transportation field

1, cryogenic refrigeration for medical use and cryogenic transportation of special drugs such as plasma and vaccines.

2. Long-distance and short-distance transportation of electronic cryogenic materials and precision components.

3. Fresh-keeping transportation of high-grade foods such as high-grade beef and mutton.

Entertainment field

Widely used in stage, theater, film and television, wedding, celebration, party and so on. There are countless special effects classic plays made of dry ice in China and even in the world.

Fire field

Dry ice is used to put out fires, such as some low-temperature fire extinguishers, but the application of dry ice in this respect is less, that is, the market level is low.