Have a Well Designed Web Site
Exporters who do not have a web site are at a serious disadvantage. If you are serious about doing business with US importers, you should have a well-designed web site. It is very important in today's market. If you dont have one, get one. Not having a web site is like not having a fax machine. For information on how to design an effective web site 
Have An Effective E-Mail Marketing Strategy
Sending sales messages by e-mail can be a low cost, effective, and fast way to find new customers. But it has to be done properly and using the expected business etiquette. Done the wrong way and you will get the reputation of spamming or being a "spammer". And importers HATE spammers. Some of the companies on our USA Importers list have web site addresses. But you should contact them first and ask if you can send a message. This way they are expecting it and the message will be much more effective. To get a brief introduction to e-mail marketing 
Keep Your Brochure to One or Two Pages
Whether to enclose a brochure with your sales letter is up to you. Now that buyers can go to the internet and get information from a seller's web site, brochures have become almost obsolete. If you do include a brochure it should be no more than two pages. Large brochures are a waste of your money and the buyer's time. You can put this same information up on your web site and change it as the market requires.
Use Modern Words in Your Sales Letters
and E-mail Messages
Importers want to do business with exporters that have a modern image. For this you should use modern words in your written communication. Use "please", not "kindly". Use "I have received ...", not the out-of-date "Acknowledge receipt of ...". Use "please", not "Would you be so kind as to ..." Some people think that using old fashion phrases makes the letter more polite. It does not. It only makes you look old and out-of-date. Choose modern words.
To see how NOT to sell to the USA