What is a heat shield?

The insulation board is shown in the figure.

It is on this plate that cups can be placed to keep the coffee, tea, hot soup, milk and hot medicine in the cups at a certain temperature.

Or it can be heated, for example, the boxed milk is below the temperature.

Automatic constant temperature of about 60~70 degrees, low power consumption and continuous use. Suitable for offices, families, schools and other places.

There are many styles of appearance, and this picture is just one of them. Taobao online search will produce many models. Prices range from a dozen to several hundred.

There are bigger ones that can keep several dishes warm at the same time. In the cold winter season, it is also good to use it when there is no heating at home.