Dear gentlemen,
With reference to your letter of1February 27th asking about product A, we regret to inform you that we don't have the product you requested. However, we can provide some other products similar to product A, which can also meet your needs. Attached is the detailed information of our products. Please let us know as soon as possible if you are interested in these products. As soon as we receive your specific inquiry, we will be glad to send you quotations and samples.
Looking forward to your early reply.
Best wishes,
Yours faithfully,
John
Because I don't know what product you are making, it's not very good. It can be modified according to the actual situation.
For goods like this, the main purpose of reply is to express that you don't have their products and provide substitutes that you can provide at the same time, so as to win business.
I hope it helps you.