Fiber Optic Components, Patch Cord, Connector manufacturer / supplier in China, offering FC/Upc Singlemode 0-25dB Female to Male Fiber Optic Attenuator, FC/APC Singlemode 0-25dB Plug-in Type Fiber Optic Attenuator, 24 Ports Pull-out Type Fiber Optical Distribution Frame ODF and so on.