如何写邮件推荐自己的产品？英语

怎么向老外推荐我们的产品呢？
以前从没做过交流，只是他是一个很大的客户，一直都是从别的厂家买的。
我们想把他争取过来。
这是第一封邮件，要怎么写呢？
有什么格式没？
谢咯！

主题应该写什么呢？

Dear MrXXX,

How are you .

It's so honorable for me to get to know that you are presently on the market for XXX,and as a specialized manufacturer and exporter for these products in China,we sincerely hope to establish business relations with your esteemed corporation.

Please let me know your specific requirements for quotations. Looking forward to long-terms, fruitful and stable cooperation with you.

Best Regards.

Yours XXX

dear xx, 正文 cheers(or regards, or yours,etc) your name (自己的名字)