In the twenty-first century today, there are really a lot of things that we all feel very convenient to use, but also we all feel that those things are very good to use, we will feel that he can bring great convenience to our lives. The last time we had a medical power supply malfunction at home, when we went shopping, the shop assistant recommended an all-purpose medical power supply, taught us how to use it, and told us what we should pay attention to when using medical power supply. I really felt that The most important thing is that it can be used in many places in the home, which brings great convenience to our life. We also use it frequently.