As long as you have a business license, you can participate. It is impossible for the organizer to check the authenticity of every product. Generally, a regular jewelry exhibition will set up a free monitoring point somewhere in the exhibition hall. If you are not worried about what you buy, you can go to the monitoring point and let the professionals show you. However, the management of some small and medium-sized jewelry exhibitions in China is not perfect, and there are still many cases of selling fakes and shoddy goods.