molecular structure teaching aids junior and senior high school chemistry demonstration model assembly teaching demonstration for students 分子结构教具 初高中化学演示模型 组装款教学演示学生用

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【Molecular Structure Teaching Aid】Demonstration models for chemistry education in middle and high school, assembled version for students to use in teaching demonstrations.

Suitable for students to assemble manually and understand molecular structures intuitively.

High-quality ABS plastic, safe and non-toxic, securely assembled for repeated use.

Through 3D models, you can easily understand atomic bonding—no more rote memorization.

Recommended by teachers, trusted by parents, helps achieve high scores in chemistry.