2fiber, Figure-8 structure,900μm or 600μm tight buffer fiber, Aramid yarn, PVC jacket.Speak in detail, the figure-8fiber optic cable uses two Φ900μm or Φ600μm flame-retardant tight-fitting optical fibers as the optical transmission medium, and is covered with a layer of aramid as the force-strengthening unit, and extruded a layer of 8-shaped polyvinyl chloride (PVC) or low-smoke. Halogen-free material (LSZH, low-smoke, halogen-free, flame retardant) sheathed.