此外，换证审核必须在证书有效期到期前完全结束。

In addition, the recertification audit must have been totally concluded before the validity of the certification has expired.

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在这方面，必须注意换证审核必须在审核周期到期之前执行。

In this context, it should be noted a Recertification audit will have to be conducted before the relevant date of the audit cycle is exceeded.

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