GYXTC8Y【Outdoor Optical Cable for Communication with Metal Strengthening Member, Central Bundle Type, Polyethylene Sheath】The structure of the optical cable is to insert single-mode or multi-mode optical fiber into a loose tube made of high-modulus plastic and filled with waterproof compound. Place it in the center of the cable, extrude the polyethylene sheath, and add a steel wire or steel strand sling to form a cable.