Founded in the year 2004, El-Noman Group for Medical Equipment specializing in a wide range of medical services The Group provides and highest quality ophthalmology technology from international companies. The group is the official distributor for Topcon, Bausch and Lomb, Ellex. The JS-BL55311G-20I SFP transceivers are high performance, cost effective modules supporting data rate of 1. 25Gbps and 20km transmission distance with SMF. The transceiver consists of three sections: a DFB laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and. ISO/IEC 27001 is an international standard for managing and processing information security. We have rich experience of OEM, choose us to help you build your own brand SFP optical modules. This technology is widely used in telecommunications, data centers, and networking applications to achieve high-speed data transfer with minimal loss. for Medical Equipment and Material. Our Objective is to be the slected partner of respectable medical products manufactures and offer the best in class services to the.