Joyun’s Mineral-Insulated Fire-Resistant Wiring Cable (MI Cable) features solid copper conductors encased in magnesium oxide insulation and a seamless copper sheath. Designed to maintain electrical circuit integrity even under extreme conditions, it withstands fire temperatures up to 950 °C for 3 hours. As an inorganic, non-combustible solution, it produces no smoke or toxic emissions—ensuring safety and compliance in life-critical systems.

The robust metallic sheath offers superior protection against mechanical damage, corrosion, moisture, and electromagnetic interference. Thanks to efficient heat transfer, it can carry more current than conventional cables of the same size, while remaining compact. With a service lifespan exceeding 50–100 years, this cable is ideal for essential building systems like fire alarms, elevators, emergency lighting, and industrial safety systems.