ViaGasaFamido Conductive Ink Pen, Electronic Circuit Scribe Draw Circuits Conductivity Fast Air-Drying Technical Pen to Draw Vivid Circuit Patterns,Tungsten electrode

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ViaGasaFamido Conductive Ink Pen, Electronic Circuit Scribe Draw Circuits Conductivity Fast Air-Drying Technical Pen to Draw Vivid Circuit Patterns,Tungsten electrode