Introducing our Custom Ferrite Core Rod Copper Wire Inductor Coil, specifically designed for use in smart pens. As a factory, we utilize state-of-the-art technology to produce high-quality coils that deliver outstanding performance and precision. Our ferrite core rod provides exceptional magnetic performance, while our copper wire ensures low resistance and a stable signal output. These coils are ideal for use in various smart pen applications, including handwriting recognition and digitization. Trust our expertise and experience to provide you with the best inductor coils on the market.