11. Building Business Credit: SIC Code & NAICS Code October 20, 2009 By Marco Carbajo Please Log in to view this content. Related PostsFree FICO® Score Open Access Program Gains MomentumBuilding Business Credit: The 20 Essential Questions to Focus On How to Get Maximum Funding for a Small Business27. Building Business Credit: SBA Approved Banks Share this:TwitterGoogleFacebookLinkedInPinterest