Product Type Management - Two product types: Traditional (physical/service) and Digital (downloadable files) Price Configuration - Set product prices with decimal precision for any currency Tax Rate Application - Apply multiple tax rates to each product for automatic tax calculation Client Assignment - Restrict products to specific Portal clients or make available to all Product Categories - Organize products using hierarchical categories for better management Invoice Integration - Products integrated with invoice system for quick line item creation Digital File Storage - Pro-only feature to upload and manage digital product files on external server Company Assignment - Associate products with specific merchant companies Product Description - Custom invoice-specific descriptions separate