Dear :

I am a sales representative for [company], one of the leading suppliers of [products]. I sell high-quality [products] to resellers in [area] at unbeatable prices. I can usually save my customers at least percent on wholesale purchasing.

As I'm coming to [place] next week, I'd like to use this opportunity to pay a brief visit to your company. I can assure you that I won't waste your valuable time. Just tell me what kind of you are currently buying and I will show you how much better you can do as a customer of [company].

Shall we make an appointment to meet? I'll call your office tomorrow. If you want to talk to me on the phone, I can be reached at [phone number].

Sincerely yours,

[name]

[title]