Fiber patch cords are used to make patch cords from the device to the fiber optic cabling link. There is a thick protective layer, which is generally used in the connection between the optical transceiver and the terminal box, and is applied in some fields such as a fiber-optic communication system, a fiber access network, an optical fiber data transmission, and a local area network.we can do the OEM AND ODM,Any need, please contact with Ms Dai, email is sales@huayanelec.com.