Thomas Register - Find information on manufactures in the United States and Canada . Search by product or service, company name or brand name. Registration for free membership required to use this site.
Trade Associations - A listing of trade associations by Consumer Action. Also has information on how and where to file a complaint.
Trade Data Online - free international trade statistics compiled from Canada Statistics and the U.S. Census Bureau.
Trade Show Resource - Search for trade shows by name or industry, or venue. Also a search engine for suppliers and seminars.