在符合其法律的规定下，被要求方须按要求方指定的形式，交回送达证明。

The Requested Party shall, subject to its law, return a proof of service in the manner required by the Requesting Party.

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邮局证明还罕见百封这样的函件正在办公室等待送达。

The post office have confirmed that hundreds more are piling up at the sorting office.

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而此种通知正式付邮的证件，应视为送达此种通知的充分证明。

The formal documents attached to this formal notice shall be deemed sufficient proof of service of such notice.

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