《自动进口许可证》需要延期或变更，一律重新办理，旧证应交还原发证机关并同时撤销。

If Automatic Import license needs to be extended or altered, a new one should be issued and the old one should be returned to license issuing organs and be cancelled.

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如果需要延期，请在到期日之前与指导老师或助教联系。

Please contact an instructor or teaching assistant prior to the due-date if an extension is required.

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