W-9889 Solar Electronic Block Kit has 9889 different kinds of assembly methods. It is the latest patent product firstly researed and developed by our factory ¡ª¡ª Solar Electronic Puzzles.
It can be used for solar fan, solar lamp, solar radio, solar Koraoke, hand generator fan, hand generator charge and so on.
Suitable for people between 8 and 80 years old.
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