1. Consult the trade union organization department of your unit: You can consult the trade union organization department of your unit to find out the trade union organization situation of your unit.
2. Inquire in your company's personnel department: You can inquire about your own trade union organization information in your company's personnel department.
3. Query in the company employee information file: You can consult the company employee information file and find your own trade union organization information.
4. Inquire through the Internet: You can try to inquire through the websites of trade unions in various provinces and cities, but you need to pay attention to confirming the authenticity of the information.
If you can't find your own trade union organization information by the above methods, you can try to contact the local trade union organization to learn how to join the trade union and the relevant application process.