Vendor Portal / Special Features, Manufacturers/Brands, STN Import Tool, Import/Export Data The STN Vendor Portal is the system where Vendors can manage manage product data and images that are made available to STN Retail Accounts. This is a free service for Vendors. See the the Vendor Portal documentation link for further details. Vendor Portal Documentation Vendor Portal Login see also:Retailer PortalRequesting Product UpdatesProduct Database Hub (PDBHub)