Let's first understand what is an cooler box and what is a refrigerator from the purpose and characteristics.   

    As the name suggests, the food cooler box is used to keep food warm. It is generally made of high-quality PE raw materials, and it is resistant to ultraviolet rays and is not easy to fade. It adopts integrated molding technology, and the product has high strength and durability.
    The heat preservation effect is good, and the heat preservation can last for 8 to 10 hours; the box cover can be separated, which is convenient for placing items; a large plastic lock is installed on the box body, and the box cover can be firmly fixed and not easy to fall off; the professional stacking structure design is adopted, which is easy to stack , easy to transport; generally applicable to hotels, hotels, restaurants, takeaways, cafeterias, collective dining and other food needs a long turnover of insulation industries.

     Food cooler box are heat-resistant and cold-resistant. Cooler box have high requirements for heat and cold resistance. They will not deform in high-temperature water, and can even be sterilized by boiling water. It is not easy to break when pressed or impacted, does not leave scratches, and can be used for a lifetime; the sealing is also particularly good, which can keep the food fresh for a longer time;

    The food cooler box also has versatility and diversity. It is designed in different sizes according to the needs of life, and is used with reusable technology ice packs. The ice pack can keep cold and heat (the ice pack can be frozen to -190°C at the lowest, and the maximum It can be heated to 200°C, and can be cut to any size); more importantly, the food cooler box is very environmentally friendly, and the food-grade environmental protection PE material is non-toxic, odorless, UV-resistant, and not easy to change color.

    The working principle of the portable cooler box is that the cooler box isolates the air inside the box from the air outside the box, thereby ensuring the temperature inside the box. Adding a frozen ice plate to the cooler box will prolong the temperature inside the box. .

So what is a refrigerator box? The refrigerator can also be called "food refrigerator", but because the most used place is the hospital, most people call it "medical refrigerator".

Medical refrigerators are refrigerated equipment designed for storage and transportation of vaccines, blood samples, blood samples, biological reagents, etc. in hospitals. It is used for carrying and transporting various vaccines, reagents, blood samples, medicines and other biological products and food cold chain transportation under the condition of no power outdoors.

The thermal insulation principle of the cooler box and the refrigerator is actually the same. Insulation and refrigeration are essentially the same concept. Putting hot things in an cooler box is for keeping warm, and putting cold things in is refrigeration. Both are mainly through a layer of polyurethane insulation in the middle of the box to keep the temperature inside the box and the temperature inside the box. The ambient temperature is effectively isolated, thereby ensuring the temperature inside the box.