Temperature is usually made of ceramic or stainless steel with vacuum containers of water are made, keep-warm glass top cover, seal, vacuum insulation blanket can make in inside the liquid such as water slow cooling, in order to achieve the purpose of heat preservation. Stainless steel vacuum cup material decides everything
Developed vacuum cup from a thermos, thermal insulation on the same principle as a thermos, people just for the convenience of the bottle into a cup. Heat has three ways: the spread of radiation, convection, and transfer. Vacuum cup silver cup bile can reflect the hot water radiation, vacuum cup bile and cup body can block the heat transfer, and less prone to the bottle can prevent heat convection heat transfer. Now the vacuum flask, also applied the principle of magnetized water, is at the bottom of the bottle and cap with magnets, make water is magnetized. It is said that magnetized water has magic effect.