请尽快开立信用证，以便我们能在本月底按期发货。
Will you please take prompt action to open the L/C so that the shipment can be effected before the end of this month?
并且请在期限内尽快给予发货指示，按期完成项目，保证金予以退还。
And please give delivery instructions within the time limit as soon as possible, to complete the project on schedule, deposit be refunded.
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