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  1. 10pcs DC 5V DIY Electronic Windmill Training Kit Speed Adjustable MCU Course Review

    10pcs DC 5V DIY Electronic Windmill Training Kit Speed Adjustable MCU Course Review

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  2. Solar Hut Windmill for Primary School Students Science Technology Small Production Review

    Solar Hut Windmill for Primary School Students Science Technology Small Production Review

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  4. Children's Science Experiment Electric Wind Turbine Technology Small Production Handmade DIY Review

    Children's Science Experiment Electric Wind Turbine Technology Small Production Handmade DIY Review

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