In a twinkling of an eye, the hot summer has gradually gone away from us, and the cold autumn and winter season also means that families need to begin to prepare a variety of heating measures. Water is the source of life for people. At the room temperature of single digits, people yearn most for nothing but a cup of warm water. The advent of thermostatic coasters has gradually solved this problem. It is said that by placing the cup on the coaster, you can keep it warm all the time, so you don't have to worry about the hot water getting cold. It can even be used to heat other drinks