Environmental respectful materials and exquisite handicraft: fact of environmental PVC material, matching computer color and exquisite hand paint, realistically restores the details of the human endocrine structure Scientific marking design: Equipped with special digital signaling to help precise re and learning, improve efficiency and reduce time consumption Exhibition of rich organs: a variety of endocrine organs such as the pituitary gland, the thyroid gland, the adrenal gland, etc.They are completely presented to facilitate the intuitive understanding of theoretical knowledge Distinction of bright colors: use bright colors to distinguish the positions of several organs, attract students' attention and improve fun and understanding of teaching (Widely applicable): It can be used as a demonstration of teaching and visual help, suitable for schools, health education and laboratories and other scenarios