If a Customs seal has been affixed, the party or his agent and the keeper shall keep it appropriately.

加施海关封志的，当事人或者其代理人、保管人应当妥善保管。

youdao

He affixed his seal to the deed.

他在契约上盖了章。

youdao

An arbitral award shall be signed by the arbitrators, on which the seal of the labor dispute arbitration commission shall be affixed.

裁决书由仲裁员签名，加盖劳动争议仲裁委员会印章。

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The Queen will officially approve the new Welsh Seal, to be affixed to all new pieces of Assembly legislation.

BBC: Preparing for the crunch ahead