Central Tube Optical Fiber Ribbon Cable For Access Network GYDXTW(12-216), Standards: YD/T981, IEC60194 ... 'CCharacteristic os product: central tube, parallel steel wires, corrugated steel tape armoring type; small diameter, lighter, more fiber; excellent mechanical and moisture ... of outdoor for access network; Entrance to access network; Central Tube Optical Fiber Ribbon Cable For Access Network