1.The model is made of polyvinyl chloride .99 plastic to make it realistic; the material will last for several years to pass on to future students to deepen the understanding of human body structure 2.With a digital logo, it is more efficient and faster to use, and it is also helpful for better understanding and practical application, showing each structure in detail 3. This model shows the structure of placental tissues, such as amniotic epithelium, dense chorion, villi, villi, cytotrophoblast shell and basal decidua, and umbilical cord. , Red is the uterine spiral artery, blue is the uterine vein, there are 14 indicators 4.Bright colors are easy to attract students' attention, so teaching demonstrations can be ced out to enhance students' understanding and improve classroom teaching efficiency 5.Suitable for medical teaching, biology and anatomy props, doctor-patient communication. For patient education or research. All important details can be easily identified