请修改下面的商务书信，删除冗长多余的词语和句子，使这封信更简

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请修改下面的商务书信，删除冗长多余的词语和句子，使这封信更简洁扼要。Dear Sir：We are in receipt of your letter of the 20th instant，and have pleasurein informing you that the order you have placed with us will receive our best attention，and that the twelve electric blankets you require will be sent to you as soon as we are in a position to supply them.We are，however，very sorry to say that our stock of these blankets is at the moment very depleted，and owing to the prolonged cold weather and the resulting demand we have been informed by the makers that they are unhkely tO be able to supply US with a further stock for anotherten days or so.We are extremely sorry not to be able to satisfy your requirements immediately，but we assure you that we always do everything we possibly can to see that your orders are met promptly.Should you find yourself unable to obtain elsewhere the blankets you need，or if you are able to wait for them until the end of the month，you will perhaps be good enough tO inform US.Once again expressing our regret at being unable to fulfill your order on this occasion with our usual promptness，and trusting you will continue to favour US with your continued custom.We remainYours truly本信要点：1)that due to the prolonged cold weather，the demand for electric blankets has been exceptional;2)that further supplies are expected in ten days’time;3)that if the order is allowed to stand，prompt delivery will then bemade;4)regret that delivery cannot be made at once.