Market Research: Conduct thorough market research to understand customer needs, market gaps, and competitors. Product Differentiation: Ensure that each product in the line has unique features that differentiate it from competitors and other products within the same line. Prototype Development: Create prototypes and gather feedback to make necessary improvements. Testing: Test the products in small markets or through beta launches to gauge customer reactions and make adjustments. Launch and Marketing: Once the products are finalized, develop a comprehensive marketing strategy to promote the entire product line.