Founded in 1994, Yuechung International Corp. (YIC) is a major frequency control component, GPS / GNSS product manufacturer and Supervisor member at Piezoelectric Crystal Industries Association of Taiwan.  The company is one of few factories in the world with processes started from cutting Quartz crystal  Y, Z bar.

YIC devoted to the research, design, manufacture and marketing of Frequency Control Products, as well as GPS/GNSS Receiver Modules, GPS / GNSS Receivers (G-Mouse) & GPS / RF Antennas.