The paper presents a Virtual Reality-based feedback system designed to support product design evaluation and customer interaction during the development process. The research proposes a Product-Service System (PSS) workflow integrating VR environments, game engines, 3D modeling, usability testing, and interactive feedback collection to improve communication between designers and users during the early design stages. The methodology combines Autodesk 3DS Max, Unreal Engine, Unity3D, C# scripting, and web-based VR deployment to create immersive environments in which users can interact with virtual products, manipulate materials and geometries, and provide evaluative feedback through integrated usability interfaces. The system is tested through interactive prototypes of industrial design objects, demonstrating how VR and real-time 3D visualization can support iterative product refinement, customer-centered design, and collaborative decision-making within digital product development pipelines.
