HOC (Hone Optical Communications) special fiber optic cable means the optical cables used in special areas or need special structure and materials to meet the application environment.

For example, the underwater fiber optic cable need good mechanical and waterproof characteristics. Hybrid cable is an integrated cable of fibers and copper power conductors, which can transmit and supply power in the network system. For mining fiber cable, it requires performance of flame retardant and anti rodent for its special environment in mines. Last and not least, some outdoor application for fiber cable is also needed to be anti termite and anti birds to protect itself from damages.