• Electricity experiment apparatus:suitable for laboratory, electrical and physical experiments use,generator
• Student experiment generator:a experiment equipment for your student to study scientific knowledge,student hand generator
• Teaching equipment:manufactured with the purpose of durability, this product would spend an eminently long period of time with you,generator experiment
• Laboratory equipment:the product is a hand generator for physical and electrical experiment use,physical electricity apparatus
• Hand generator:happy and easy to learn, exercise your student practical ability,diy dynamo