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1. Help to train children's hand-eye coordination musicality and color / shape recognition
2. Intelligence toys to develop children's intelligent and improve the manipulative ability 3. Adjustable knob to change tightness of string |
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1. Help to train children's hand-eye coordination musicality and color / shape recognition
2. Intelligence toys to develop children's intelligent and improve the manipulative ability 3. Adjustable knob to change tightness of string |
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