Maintain temperature: 0~600℃ Temperature resistance: 600~800℃ Insulating material: magnesium oxide MI cables are manufactured using a special production process using single or multiple alloy electric heating wires as the heating source, high-purity, high-temperature, fused crystallized magnesium oxide as the heat-conducting insulator, and seamless continuous stainless steel or copper tubes as the sheath. In places with strong corrosive effects, PE or low-smoke halogen-free jackets can be added.