______our catalogues for your reference.
A、EnclosingC
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As we are ____ the market for Table cloth, we should be glad if you would send us your best quotation。
We place this order ______ the understanding that the discount is 10%.
We have received your enquiry of October 15_____we learn that you are interested in our Sewing Machines.
We are making you our offer for leather shoes ____.
When the seller receives the buyer’s counter-offer, and he finds some terms and conditions unacceptable to him, he will state his own opinions in a letter, which is called as _____。