Who can tell me what this certificate is? What's the effect? Where can I use it? Is it of great use?

This certificate may be a national vocational qualification certificate.

The national vocational qualification certificate is the proof that workers have the necessary knowledge and skills to engage in a certain occupation, that workers have and reach the required knowledge and skills standards of a certain occupation, that they have passed the professional skills appraisal, and that the professional standards are reflected and positioned in social workers.

The purpose of this certificate includes: it is the qualification certificate for workers to apply for a job, take up a post and start a business, it is the main basis for employers to recruit and employ workers, it is a sharp weapon for skills and points to enter the household, it is necessary for points to enter the school, and it enjoys national promotion subsidies.

It should be noted that only some reference information is provided here. The specific certificate, its function, place of use and size of use may vary according to the specific situation. If more specific information is needed, it is recommended to consult relevant institutions or professionals.