1.25g 1310/1490nm (1490/1310nm) 40km Transceiver SFP Bidi, Find Details and Price about Transceiver 20km SFP Transceiver from 1.25g 1310/1490nm (1490/1310nm) 40km Transceiver SFP Bidi - GYSUNTEC TECHNOLOGY CO., LTD.