Lab Supplies: PVC material doesn't have to worry about being ruined by students, so it will be a great addition to your lab supplies. Great for school teaching tools, learning displays and collectibles It is suitable for schools. In the teaching of physical health, it can be used as a visual teaching aid for the teaching of physical health knowledge, so as to deepen the understanding of the structure of human lungs. The prototype is purely handmade, strong and unbreakable, made of environmentally friendly PVC, with fine workmanship, clear shape, and exquisite details. It is a rare auxiliary tool for learning and re. A life-size model divided into 4 parts. The lungs have two removable lobes to reveal the internal structures. on the stand. Convenient for your teaching presentation. In this way, the relevant knowledge can be vividly explained to students through the model, so that students can quickly understand and master Teaching tools: use different colors to distinguish different positions, bright colors are easy to attract students' attention, teaching demonstrations can be carried out, so that students can quickly understand and master