What is the application of color changing cup

Color changing cup is simply understood as a cup that can change color. The difference between color changing cup and ordinary cup is that a layer of thermal color material is added to the surface of the cup, also known as magic cup, while ordinary cup can not change color. The material of color changing cup mainly includes ceramics, glass, aluminum alloy and stainless steel. The color changing cup can not only change from heat to 40 degrees, but also from cold to 18 degrees. Such a cup is not widely used now. It is usually used in advertising, corporate activities, gift promotion, etc.