SZLZJT Communication Equipment Co., Ltd. factory certificated by ISO9001:2008,certification number:130955,it located in Shenzhen bantian, my factory make the fiber media converter  since year 2004,there are 150 people worker in production line,in my factory have the high speed YAMAHA SMT make the fiber media converter board, and the modules also made by my factory,the fiber media converter charger also made by my factory.
All our fiber media converter use the New IC and with the new modules,warranty:3 years.