12 years, 4 years, 6 years, 5 years, 8 years, 7 years, 11 years, 10 years old
Place of origin:
Mainland China
Applicable to gender:
Generally General
Color Classification:
238 primary physics chemistry experiments aged 4-12 years and 32 primary physics chemical experiments aged 4-12 years and 109 comprehensive experiments send 315 science videos (first grade) 20 high
Type of Experiment:
Biological Chemistry
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