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Chinese Factory Qsfp+ Mudule Lr 10km Fiber Optic Transceiver 40g 1310nm 10km Qsfp QSFP+ 40G MM SM MPO / LC SR4 100M 10KM LR4 20KM ER4 40KM 60KM ZR4 80KM Fiber Optical transceiver QSFP-40G-LR4 40Gb/s ...