About our story, we chose this Thermos because it is a daily used by everyone, it is easy to take anywhere because of its compact and small shape, and can save time. So we innovated this thermos into a new modern innovation that can convert water into hot water or cold water by pressing the button on the led screen of the thermos. In the future, this thermos will be something to take anywhere, especially for those who go hiking, picnics, and so on.