The earliest cans were made of glass bottles with cork and wire tightly plugging the mouth of the bottle. In 1795, the French emperor Napoleon led his army to conquer the Quartet. The seafarers who lived on the ship for a long time fell ill because they could not eat fresh vegetables, fruits and other foods, and some even suffered from serious life-threatening scurvy. Because the front line is too long, a large amount of food will rot and deteriorate after being transported to the front line.

Insulation cup from the thermos bottle of the development, the principle of insulation as a thermos bottle, people just for the convenience of the bottle made of glass. Heat transmission has three ways: radiation, convection and transfer.Heat preservation cup silver cup liner can radiation reflection hot water, vacuumcup liner and a cup body can block heat transfer, and is not easy to block theheat convection can transfer heat bottles. Thermos bottle now, also the application of magnetized water principle, is at the bottom of the bottle and the bottle cap with a magnet, so that the water is magnetized.

Some people like to use thermos cups to hold beverages, such as milk tea, coffee, etc. So will these beverages in thermos cups lead to deterioration and how long is the preservation time? Regarding these issues, some people have done relevant experiments to prove it.