... patchcord,pigtail,connector,attenuator 2,splitter,sfp,converter 3,odf,patch panel 4,splice closure ... in R&D, manufacture and sales of fiber optical communications equipments. YHT was establish in ... constantly and strictly in order to give the best products to the users. The outstanding features ... Fiber optic patch cord,2, Connector,3, Adapter,4, Optical coupler,5, Attenuator,6, Optic media converter, ...