1Model Set: This model is composed of colorful plastic balls and connecting keys, with bright colors, excellent craftsmanship, easy to use, and durable. 2Applicability: This model can be used to describe the structure of various inorganic and organic molecules in chemistry textbooks. Inorganic/organic chemistry tutorial, organic molecular structure model, spherical molecular structure model. 3Material: Made of environmentally friendly plastic, it is very safe and will not break, and has a long service life. 4Multifunction: The model can improve students' interest in learning, and teachers can explain it more intuitively. Very convenient. Stimulate children's interest in learning, exercise practical skills, and expand spatial imagination. 5Features: This model set can be used to build a variety of common and slightly complex C, H, O, N, chemical organic molecular structure models, suitable for teaching and laboratory use.