At this site you can find link to business information, internet, hardware, software, economics, consulting, finance, import and export, investigation, investment, international taxation to fit your processes.

Washington, DC

Listings
Virginia based barter exchange serving the Northern Virginia, Maryland, and Washington, DC areas. Information about membership, benefits, and items available for trade.
http://www.bnibarter.com/
Washington D.C. based import-export consultancy specializing in emerging and transitional market.
http://www.iasworldtrade.com/