Do toys with battery holders have to add screws to the battery cover?

According to the requirements of national toy manufacturing standards, the toy battery cover with battery holder should be screwed down. The first purpose is to prevent the battery from being knocked off when the toy vibrates during play, which will affect the use; In addition, it is more important to prevent children from eating batteries by mistake and endangering their lives. Therefore, since there are screws on the cover of the toy battery holder, it must be tightened, otherwise toy manufacturers will not install screws in order to reduce costs, because once danger occurs, it will affect people's lives.