Dear :

We are writing to you on behalf of our principals in [country/area] who are interested in importing [products].

Could you send us your latest catalog and quote your most competitive prices?

Our principals are one of the leading importers of [goods] in [country/area] and will probably place substantial orders if they are satisfied with the quality and prices of your products.

We hope to hear from you soon.

Yours sincerely,

[name]

[title]