The company's goal is to lead the markets with advanced technologies. Business field Fiber Fault Finder(3F) is a tool for FTTx maintenance, Using 3F, the length, fault position and distributed loss profile of an optical fiber can be checked graphically up to 10km with the resolution of 5m. It is designed to be small to be carried easily for field engineers. Mini optical powermeter(BOPM-2000) is a pocket size tool to measure optical power in optical communication system. Optical transmission system: Optical transmission system is a system that converts electric signal to optical signal with optical fiber for transmitting converted signal over long distance. The system typically applies to perimeter monitoring system, remote control of traffic information network, and video conference. Signal to transmit contains video, voice and data. Optical transmission systems are classified into: Optical video link for transmitting video signals; Optical data link for data; Optical audio link for voice signal; and Optical smart box for simultaneous transmission of video, data and voice signals. Each product is applied with advanced digital mode to provide properties of low distortion and wide bandwidth. Parts for mass production are developed and applied to development of circuits to realize most competitive prices among any products in Korea and overseas markets.