Feature●Made of plastic, it is very safe and will not be broken, and has a long service life.●The model can increase the students interest in learning, and the teacher can explain it more intuitively. Very convenient.●Inorganic/organic chemistry tutorial, organic molecular structure model, ball-type molecular structure model.●Strong bond between atom and key link,not easy to deform.●The model set can be used to construct a variety of common and slightly complex C, H, O, N, Br, l organic molecular structure models, suitable for teaching and laboratory use.Description