1. JANSNO X70G Retro Electric Bike 750W Motor 48V 34AH Dual Battery 20*4.0" Fat Tire Electric Bike

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  3. Science project: How to build a small water pump at home using a motor pump

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  5. Wallke H9 AWD Electric Bike 2000W Motor 40AH Battery 20*4.0" Fat Tire Electric Bike

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