Shenzhen Fiber Source Communication Technology Co., Ltd（called SFO for short), which develops, produces and commercializes fiber optic components and optical cables since 2006. SFO is certified by ISO 9001:2000 international quality system. We built two production base- Shenzhen and Zhejiang, which covers 5000 sqm, with more than 260 employees. And own Dust-free workshop for CWDM, Circulator, PM patch cord, lensed fiber., and CWDM Lab. Our products include Optical Circulator, In-Line Attenuator, Isolator, CWDM, PLC splitter, Optical switch, PM patch cord, pigtail and so on. With excellent quality ,reasonable price, and strong support, we win good reputation. Company Philosophy: technology master living, quality provide guarantee, Service promote development Quality Policy: Customer demand as guide, quality as core, through enhancing the production process and applying scientific management, to improve customer satisfaction. Our promise: reasonable prices, excellent quality, strong support