お久しぶりです
以前、取引をした〇〇〇です
元気にしてますか?
その後、商品のほうにトラブルはありませんんか?
もし問題があれば教えてください
全面的にサポートします
Hi, it's been a while.
I'm 〇〇〇, and I had transacted with you in the past.
How are you doing?
Was there any trouble with the product after that?
If there was, please let me know.
I will provide you with the necessary support.