All Products（9）
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Small Magnetic Needle
Model NO.：QH2406
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Model of Mini Electric Motor
Model NO.：QH2417-1
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Wimshurst machine
Model NO.：QH2310-1 QH2310-2
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Magnetic line of force land U
Model NO.：QH2441
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The hand generator
Model NO.：QH2417-4
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Demostrator of electric machinery
Model NO.：QH2417
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Electric machinery demonstrator
Model NO.：QH2416
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Experiment of Magnetic Field and Current
Model NO.：QH2404
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