Where does Yancheng have a performance agent qualification certificate?

Professional websites and social media.

1. Career Website: Search for the position of "performance broker" on major recruitment websites, contact relevant companies or individuals, and ask if you need a performance broker qualification certificate.

2. Social media: Search for "performance broker qualification certificate" or related keywords on social media platforms, and you can find some certified people or institutions, get in touch with them and ask if you can provide relevant information.