Mica heating ring is an electric heating element that uses mica as the substrate and converts electrical energy into thermal energy through heating elements. It has the characteristics of uniform heating, fast heating speed, energy conservation and environmental protection, safety and reliability, high temperature resistance, good insulation performance, and long service life. Capable of meeting the needs of different fields. Applied to heating elements in plastic molding, plastic granulation machinery, and die-casting machinery, with rich experience in heater manufacturing, scientific material selection and product process design based on the specific usage environment of the equipment, to improve the safety and long-term service life of heating elements.