谨以此函向贵方做出友好的支付提醒。

Please consider this letter as a friendly reminder.

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本保函的有效期从预付款支付之日起至业主向承包人全部收回预付款之日止。

This guarantee shall remain valid and in full effect from the date of the advance payment under the Contract until the Employer receives full repayment of the same amount from the Contractor.

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所提供的银行保函乃一依合同条款规定的直接支付保证，不可转移或撤销。

The given Bank guarantee not transferred, irrevocable and is a guarantee of direct payment under the contract.

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