Features: brand new and high quality The conductive paint pen will quickly dry off on to form a conductive metal film, so as to generate a circuit diagram. Once electronic circuit is formed, the LED light on can be illuminated. Suitable for physics teaching, circuit design, circuit wiring, circuit experiment, luminous card, The conductive paint pen is mainly composed of silver conductive mixed powder and nickel powder, which has good conductivity. Strong conductivity, strong adhesion, stable and simple operation. It is not suitable for use on the skin. Do not use your own skin as a circuit.