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    Homemade Submarine DIY Technology Physics Simulated Educational Manual Toys Stem Experiment Review

  3. 50Pcs Geekcreit® Ultrasonic Module HC-SR04 Distance Measuring Ranging Transducers Sensor DC Review

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  4. Wooden Harmonica for Kids Musical Instrument Toys Music Teaching Aid Puzzle Early Review

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    SH-18 Adjustable Speed Stirling Engine Model Science Technology Puzzle Novelty Toys Review

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    DIY Ultrasonic Suspension Learning Kit Mini Levitator Set 12V Not Assembly Review

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  7. 1Set 300g Intelligent Magnetic Levitation DIY Kits Suspension Magnetic Electronic Module Kit Review

    1Set 300g Intelligent Magnetic Levitation DIY Kits Suspension Magnetic Electronic Module Kit Review

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  8. DC 5V DIY Electronic Windmill Training Module Kit Speed Adjustable MCU Course Review

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

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  9. 150G/300G Push Down DIY Magnetic Levitation Electronic Module Kit Suspension Intelligent Review

    150G/300G Push Down DIY Magnetic Levitation Electronic Module Kit Suspension Intelligent Review

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