This is because the Company Law stipulates that the resolution of the shareholders' meeting of a limited liability company shall be signed by the board of directors and the board of supervisors and confirmed by all shareholders. The board of supervisors plays an important role in corporate governance, and its signature confirmation can ensure the legitimacy and effectiveness of the resolutions of the shareholders' meeting.

In practice, the attendance of supervisors should be noted in the minutes of the shareholders' meeting, which should be reviewed by the supervisors' meeting. If the supervisor disagrees with the resolution of the shareholders' meeting, it should be explained in the minutes of the meeting, which also reflects the supervisory role of the supervisor in corporate governance.

In order to ensure the legality and validity of the resolutions of the shareholders' meeting, the minutes of the shareholders' meeting of a limited liability company must be signed and confirmed by the supervisor. In addition, if the supervisor is found to have violated laws and regulations in the process of signature confirmation, corresponding measures should be taken in time to correct it.

In short, the minutes of the shareholders' meeting of a limited liability company need to be signed by the supervisor, which can ensure the legitimacy and effectiveness of the resolutions of the shareholders' meeting and also reflect the important role of the supervisor in corporate governance.