You can make a written request to the collector of stamp revenue to cancel the stamp certificate and issue a new one.

可书面要求印花税署署长注销印花证明书，另发新的证明书。

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Certificate of Origin or a Certificate of Re-Export shall bear a stamp at the place where the pages meet when it is over two pages.

原产地证明书及外货复出口原产地证明书在二页以上时，应加盖骑缝章戳。

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Stamp is a prepaid postage certificate issued by the postal administration of a country (region).

邮票，是指由国家(或地区)邮政主管部门发行的预付邮资凭证。

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Audit requirements are satisfied by including with every electronic document a separate certificate of completion and a legally binding audit trail with the identity of the signer, a time stamp, and location information.

FORBES: eSignature Serves The Public Sector