thermos have been used in many companies and enterprises. However, employees may not fully understand the thermo. In this article, I will introduce the knowledge of thermos to a certain extent. I hope that after reading this article, the information obtained is helpful to you. l Introduction of ther

The vacuum flask can keep hot water, so that we can drink hot water at any time in the cold winter. Therefore, many households will use vacuum flasks. But do you know how to maintain the vacuum flask? What should I pay attention to when using a vacuum flask?

Many people use thermos because of how convenient they are. It is widely used to keep hot and cold drinks/soups for many hours. If you drink hot beverages, they keep them hot; if you put cold drinks in them, they keep them cool.

Everyone is very familiar with the vacuum flask, so how to choose the vacuum flask? Today we will talk about this topic.