Solar fan DIY children's technology small production invention primary school science experiment manual toy factory direct sale
(No reviews yet)
Write a Review
Related Products
Creative DIY small lamp technology small production small invention primary school children's manual material science experiment
$1,935.99
Experimental principle: This is a typical switch circuit. The battery provides power. The switch controls the on/off of the current. When the switch is turned on, the switch current flows...
Transmitter Science Experiment Toy primary school student science popularization device science and technology invention factory
$1,814.99
Transmitter course courseware The principle of radio receiving and transmitting is that the transmitter sends out current of different frequency and wavelength according to the requirements of...
Science Experiment Toy double wing electric car primary school students' science technology children's Handmade small invention
$1,693.99
Science Experiment Toy double wing electric car primary school students' science technology children's Handmade small invention
