DIY Electric Buoyancy Ball Primary School Science Toys Educational STEM Kits HTT0007

DIY Electric Buoyancy Ball Demo Video 👇🌹

ABS environmentally friendly material, safe and non-toxic, easy to install. Disassembly process, exercise finger flexibility and wrist strength. Entertain and educate and develop intelligence. A vivid display of the principle of an electric buoyancy ball.

DIY Electric Buoyancy Ball Accessories

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