How can I write an introduction letter company to send it for suppliers to importing some industrial prouducts?

Hi, moh_yakout2005!

There are many ways to do that, but it does depend on specifics as to what it's concerning. You know more about what it's concerning than anyone else here.

If you'd like to post a draft here of what you'd like to write, with leaving out any contact information, I'm sure that there would be those of us who would come along and be willing to advise you as to how you might make improvements to your letter.

If you click on the following searches, you're also going to find sites that have examples of introduction letters.

How to Write an Introduction Letter for a Product - Google Search

How to Write an Introduction Letter for Importing Product Examples - Google Search

How to Write an Introduction Letter for Importing Product Sample - Google Search

Sample Introduction Letter for Product - Google Search

Thanks!