Introducing our high-quality, reliable and durable Custom Ferrite Core Rod Copper Wire Inductor Coil for smart pen. As a renowned factory, we take pride in manufacturing top-notch products to meet your specific needs. This carefully designed inductor coil boasts exceptional performance, ensuring smooth and efficient operation of your smart pen. Crafted with precision using premium ferrite core rod and copper wire, it guarantees optimal conductivity and minimizes electromagnetic interference. Trust in our factory's expertise and choose this superior inductor coil for an enhanced writing experience with your smart pen.