Sichuan Ziguan Photonics Technology Co.,Ltd (formerly COF Communication Co.,Ltd), established in 2015, located in Mianyang. China, specialize in providing high-performance optical passive devices and optical active devices as well, which including the products of Couple, Connector, MEMS Optic Switch, Optic switch, MEMS VOA, isolator, Tolaser, butterfly laser, PLC Splitter, etc.