The Commission for Discipline Inspection provided a provincial certificate, which also read voluntary submission and signature. This may mean that the Disciplinary Committee needs to provide a copy of the ID card as a supporting document when conducting an investigation or review, and requires the respondent to sign a voluntary declaration.

Specifically, this may include the following situations:

1. Investigate suspected illegal and criminal acts: Disciplinary committees can investigate suspected illegal and criminal acts, such as corruption, bribery and bribery. In this case, the interviewee may need to provide a copy of the ID card as supporting documents.

2. Examination of suspected illegal and criminal acts: The Disciplinary Committee may examine suspected illegal and criminal acts, such as corruption, bribery, bribery, etc. In this case, the interviewee may need to provide a copy of the ID card as supporting documents.

3. Collection of evidence: The Disciplinary Committee may collect evidence related to acts suspected of violating the law and committing crimes, such as witness testimony and material evidence. In this case, the interviewee may need to provide a copy of the ID card as supporting documents.

4. Privacy protection: The Commission for Discipline Inspection may require the respondent to provide a copy of his/her ID card as a supporting document to protect the privacy of the respondent. In this case, the defendant may need to sign a voluntary declaration.

In short, the Commission for Discipline Inspection may ask for a copy of the ID card and sign a voluntary declaration, which may be for the purpose of investigating or reviewing suspected illegal and criminal acts and protecting the privacy of the respondents.