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Led Light emitting Christmas Tree Colorful Color changing Fiber Tree Replaceable Battery Christmas Gift Plastic - Festive

Led Light emitting Christmas Tree Colorful Color changing Fiber Tree Replaceable Battery Christmas Gift Plastic - Festive

Led Light emitting Christmas Tree Colorful Color changing Fiber Tree Replaceable Battery Christmas Gift Plastic - Festive

Led Light emitting Christmas Tree Colorful Color changing Fiber Tree Replaceable Battery Christmas Gift Plastic - Festive

Fiber laser emitting module Photodiode driving circuit board Electric signal transmission optical signal conversion - Demo board