The first one is called vertical lift cable (Riser) in fiber optic manufacturer in china.After the cable came into the building, the need to provide access device, connected equipment room or computer room and cupboard communication between different floors, known as "vertical cabling system." At this point, wiring cable multi-shaft located between floors vertical pipe (Riser) inside. To the end, the cable needs to withstand greater tensile strength (maximum weight).
 
The second one is single,dual interconnection indoor cable (Interconnectcable) Single sleeve, sleeve,8-core, core sleeve 2 to 4 core cable indoor circular structure with very good thanks to the softness of the sleeve bearing structure and higharamid yarn around the tight buffered fiber, best fiber optic cable structure size small, softness, and can withstand a small bending radius, no inventory  marks, is a fiber to the workstation, insert within the communications cabinet wiring, pigtails, jumpers, communications cabinet to the interior wall terminals, leads to end transceiver applications ideal for interconnection cable and so on.
 
They are directly with standard connectors, communication cabinet, distribution box, protective case, equipment case played a device between the light side and the trunk (vertical) between the cable interconnection role. To buy fiber optic patch cord in here.This type of cable is installed in a limited space is both convenient and easy wiring  becomes limited space, ideal for network cables plugged in the building program of the cord.