Use 304 stainless steel, high-purity magnesium oxide rod, magnesium powder, nickel-chromium wire and other high-quality materials, which have the advantages of high insulation, more safety, fast heating, uniform heating, and low failure rate. It is suitable for embedded heating of molds and occasions with high vibration. It is widely used for mold heating, mechanical equipment, electrical appliances, pharmaceutical production lines, laboratories, chemical fields, etc.