... CONDUCTOR: IT IS MADE UP OF STRANDED COPPER WIRES, WITH FAVORABLE FLEXURAL PROPERTY.2. INSULATION LAYER: IT ADOPTS HIGH- ... INORGANIC INSULATING MATERIALS.3. COPPER SHEATH: COPPER MEATERIALS, THROUGH SPECIAL MACHINING, WITH FAVORABLE FLEXURAL PROPERTY, USED AS PE WIRE.4. ... OF PLASTIC MATERIALS OF LOW-SMOKE NON-TOXICITY, WITH FAVORABLE CORROSION PROTECTION. FLEXIBLE MINERAL INSULATED FIREPROOF CABLE