Experian is one of the 3 big agencies that publish credit reports for individuals, as well as businesses. Experian changed its name from TRW in 1997, and some people still refer to these reports as "TRWs."
Experian business reports are sold for cheap through SmartBusinessReports.com. They are also available from SkyMinder, KnowX.com, Dialog (File 547), Westlaw (EXPERIAN-REPORTS) and Lexis (BUSRPT), but they're generally more expensive and may have less information.