Mineral matter insulation cable  is called mi cable in abroad and called fireproof cable in internal.it use  the high conductivity  copper for conductor ,use the mgo for insulation  and use the no-seam copper pipe for jacket.  it made of special technology of  modern construction cable and special  industry.due to its material and configuration is particularity .so this product`s behaviour of electricity,mechanical behaviour ,endure condition behaviour and environmental protection behaviour better than plastic cable .