Shijiazhuang Hao Bo Dry Ice Factory is the largest manufacturer at present, and its density of liquid carbon dioxide is 1. 1 g/cm3. Cooling under pressure can condense into solid carbon dioxide, commonly known as dry ice. The density of dry ice is1.56g/cm3. Dry ice is widely used-Shijiazhuang food-grade dry ice factory 1. When dry ice melts, it directly turns into gas, and absorbs heat during the melting process, thus reducing the surrounding temperature. Therefore, dry ice is often used as a refrigerant. Spraying dry ice in the air by plane can condense the water vapor in the air, thus forming artificial rainfall. 2. Dry ice is used for dry cleaning. It can successfully remove baking residues, gelatinous substances and oil stains in the oven, and effectively clean the oven, mixing and stirring equipment, conveyor belt, molded products, packaging equipment, stove rack, stove plate, container, roller, inner wall of freezer and biscuit stove bar. Can clean electric boilers, condensers and various heat exchangers; You can also directly clean indoor and outdoor transformers, insulators, power distribution cabinets and live wires and cables. It is difficult to remove ink in printing industry, and the accumulation of ink on gears and guide rails will lead to poor printing quality. Dry ice cleaning can remove all kinds of oil-based and water-based inks and varnishes, and clean oil stains, accumulated inks and dyes on gears, guide rails and nozzles. Reduce downtime, eliminate the use of harmful chemicals, avoid the discharge of harmful wastes and solutions, and avoid personal injury caused by harmful solvents. 3. Dry ice is used in beauty industry. Some dermatologists use dry ice to treat acne, which is called cryotherapy. Because it will slightly freeze the skin. There is a frozen substance for treating acne, which is made of ground dry ice and ethyl ketone, and sometimes some sulfur is added. Liquid nitrogen and dry ice can also be used as cryotherapy materials to reduce wound inflammation. 4. Dry ice is also used in food industry. Adding dry ice to wine, cocktail or beverage is cool and delicious when drinking, and the cup is full of smoke, which is very pleasant. When making ice cream, dry ice is added, which is not easy to melt, especially suitable for cold storage of takeaway ice cream. Seafood dishes made by star-rated hotels and restaurants, with dry ice, can produce white smoke landscape and improve the banquet level. Lobster, crab, shark's fin and other seafood are frozen and refrigerated. Dry ice will not melt into water, and it is cleaner and cleaner than storing ice. 5. Dry ice is used in the field of refrigerated transportation. Cryopreservation, medical use and transportation of special drugs such as plasma and vaccines. Long-distance and short-distance transportation of electronic cryogenic materials and precision components. 6. Dry ice is widely used in entertainment fields, such as stage, theater, film and television, wedding and celebration, and some programs are made of dry ice.