educational science toys electronic kits

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1.299 kinds assembly circuit 2.original manufacturer and directly sale 3.easy to operate and play 4.develop and improve children's intelligence and interesting 5.useful for electronic learning and teaching for children Adantage: 1:have own patent brand,R&D center,update regularly with the international trends 2:srong production and processing capacity 3:trial order and sample order are welcome 4:OEM&ODM services are accepted 5.the circuits from simple to difficuit 6.manual ,magnetic,light,water,sound,electrical,touch,time,temperature,etc many different controlled methods