Seifree was established on 25 March 2011, the company is located in Optics Valley of China. Seifree designs, manufactures and supplies fiber optic products and services that serve as emerging part for the communications industry. The product includes thin-film filter (DWDM, CWDM, Triple-play WDM), Fused Bi-Conical Taper (Coupler, WDM) and Waveguide Splitter (PLC Splitter), Micro-optics (Circulator, Isolator) Fiber optical Interconnect (Optical Jumper, Adaptor) and other components and modules of Active (CWDM SFP) and Passive. We create a good working atmosphere, solidarity and cooperation, and build the corporate culture --Service, Excellence, Innovation, Fidelity, Reciprocity, Economical, and Development. All products are designed, manufactured and delivered to meet the requirements of Telcordia and ISO9001. We welcome you to consider Seifree to provide the high-quality product and considerate service for meet your demands.