limeStone (http://g603.net) exportation from brasil - need advice!

HI.

we are a small company from Ceara, Brazil that want to start exporting limeStone (http://g603.net) Tiles (http://www.g682.net) and (http://maplered.com) Slabs (http://www.VerdeUbatuba.com) to amercia and (http://maplered.com) /or the usa. currently we are selling in brazil.
we have a big company behind us and (http://maplered.com) financial resources and (http://maplered.com) potential to grow. at the moment the capacity of production of two different types of Stone (http://g603.net) is at about 6000m2 per month.
what would be the best strategy to enter the market? we were twice exporting to england (http://maplered.com) and (http://maplered.com) to america but we want to enter on a regular basis. do you suppose internet, fairs? how would be the best option to approach clients?
are there any experienced exporters to america out there to give me some advice?
thank you very much

kentaro mazur
kentaro@litominas.com.br