It is used for school teaching tools, learning exhibitions, and collections. Detailed design: The left vein and middle artery are severed in the anterior transverse section, longitudinal section, and overview. The above figure shows the recognition of different tissue layers on the wall. The anterior part of the right vein is fully opened, and the entrance of the vein and two venous valves can be seen. Increase by 14 times: Easy to ob , cardiovascular arteriovenous anatomy model, professional teaching model, clear structure. Clear texture and accurate structure. Detachable base design: easy to transport. Accurate and clear, with full colors and no fading. Design and manufacture based on knowledge of standards. Wide range: It can be used not only as a learning tool for students, but also as a communication tool for and patients. Enough to satisfy anyone interested in human organs.