Thank you for your request. With reference to our discussions on the phone , we are pleased to submit our offer for the products about which you enquired. We look forward to receiving your order.
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I wouldn't use the word "valuable" here--it makes it seem as though you are only interested in money!
Thank you for your request.
With reference to our discussions on the phone, we are pleased to submit our offer for the products about which you enquired.
We look forward to receiving your order.