The design is reasonable and the proportion is appropriate, which can accurately indicate the key structural parameters such as key length, key type, and key angle. Versatility.
This model is made up of colorful plastic balls and connecting keys. It has bright colors, excellent craftsmanship, convenient use and durability. 

Science Lab Export, Can formulate the structural formulas of various molecules of inorganic and organic substances in chemistry textbooks. Such as alkane, alkene, alkyne, halide, alcohol, phenol, aldehyde, ketone, ester, etc. in middle school chemistry teaching, and stereoisomerism, optical isomerism and the conversion between them in university teaching materials. 
Like dichloroethylene (C2H2) Cl2, this model can form three isomers at the same time.