Learning Aid Tool - This model can help you intuitively understand and capitate the arteriosclerosis of human blood vessels from different angles. The combination of theory and practice improves learning efficiency, avoids unnecessary waste of time and has a good additional lesson effect to achieve the best learning effect. Material - Made of environmentally friendly PVC material, beautifully hand-painted, no peculiar smell, which is corrosion resistant, lightweight, and has high strength Efficient Teaching Aids - Very intuitive, very suitable for teachers to explain to students, easier for students to understand technical knowledge points, easier to attract students' attention, and lay a solid foundation for future learning Wide Range of Applications - The model is detailed enough to be suitable as a gift for medical researchers or doctors. Not only can it be used as a learning instrument for medical students, but also as a teaching and research tool and is also a necessary tool to achieve barrier-free communication between doctors and patients. Style Selection - A: Seven Stage Vessels; B: Fork Shaped Vessels;C: Four Stage Vessels;D: Large Vessel Occlusion;E: Dynamic Vessels;F: Arteriovenous Vessels.