Vacuum cup

- Nov 08, 2019-

Vacuum cup, simply speaking, is able to keep the heat of the cup, is generally made of ceramic or stainless steel with a vacuum layer into the container of water, the top has a cover, sealed tightly, vacuum insulation layer can be installed in the internal water and other liquids to delay heat dissipation, in order to achieve the purpose of heat preservation. Thermos cup is developed from thermos bottle, the principle of heat preservation is the same as thermos bottle, but people make the bottle into cup for convenience.