[Lung Model Structure]: The front and back of the model are different. A normal lung is shown on one side and a diseased lung is shown on the other. The details on both sides are clearly depicted, and the color separation is obvious, which is easy for people to distinguish [Teaching Tool]: Enables vivid, engaging explanations during lessons, helping students quickly grasp and retain key concepts about lung anatomy and smoking-related pathology [Pathological Visualization]: Provides a detailed, hands-on exploration of lung pathology, offering an immersive learning experience that deepens understanding of respiratory health and disease [Premium Material]: Crafted from high-quality PVC, this model boasts exceptional durability. Lightweight, fade-resistant, and resistant to deformation, it offers extended longevity [Application]: This model facilitates recognition of human pulmonary anatomy, serving as an instructional aid to guide students, making learning more accessible and adding educational appeal