optical cable fiberglass yarn can compact the optical cable structure, increase the tensile and compressive strength of optical cable, and is widely used in all-media optical cables. Ensure that the cable can still work normally in the case of too high or too low temperature, to adapt to more harsh environment; The insulating properties protect it from lightning strikes or other electromagnetic interference. optical cable fiberglass yarn has the ability to absorb water. When the optical cable is invaded by water, it protects the optical cable from water. Light weight, flexible, good water resistance, easy to use. It has good compatibility with other materials of optical cable.