If you don’t have a registered trademark, as long as you don’t use someone else’s registered brand, you should be fine. Your self-created brand is just your logo and is not illegal. But there are hidden dangers. 1. If the logo you are using is already being registered or has been registered, then your behavior is likely to be illegal. 2. The brand you worked so hard to create is registered by others, resulting in losses. There are many such examples. If you do your own small handicraft workshop, it actually doesn't matter. However, it is better to make sure that it has not been registered by others. If it develops well in the future, you can still register it. . .