River Eletec Corporation, together with its subsidiaries, develops, produces, and sells quartz crystal units, crystal oscillators, resistors, and other components. Its offerings include AT-cut, tuning fork, and KoT-cut OPAW crystal units, as well as KoT-cut OPAW, MHz, and kHz crystal oscillators. These products are used in smartphones, in-vehicle systems, wireless communication, audiovisual equipment, and medical/healthcare fields. Formerly known as Fuji Sangyo Company, it changed its name to River Eletec Corporation in October 1991; the company was founded in 1949 and is headquartered in Nirasaki, Japan.