The so-called "new three years, old three years, sewing and mending another three years" "These proverbs have long been spread in our lives, as well as in the use of some household appliances. In our lives, people always know the production date and shelf life of the products they buy when they buy. This is a good habit formed by most consumers when buying food. In some household appliances In the use of equipment, they also have these things. When some things are used for a long time, it will be found that after repair, the performance may be much worse than before. However, this also needs to be aimed at different equipment, such as the fire protection lighting distribution box we usually use. In life, if the fire protection lighting distribution box is used for a certain period of time Limited. If some problems are not solved in time, some problems may occur. Therefore, in the process of solving them, we also need to pay attention to whether the fire lighting distribution box needs to be replaced. If so, we also need to deal with them in time.