With the gradual introduction of all kinds of electronic switches into people’s daily life, from large-scale machine tool manipulators in enterprises to light switch mobile phones in our homes, they play a vital role in our lives. If there is a switch missing. Many, many electrical appliances cannot be used normally. If the light at home is not always on or never, the screen of our mobile phone may never be on. I don’t know how much you know about the tact switch?