Open joint stock company "Avrora" (AURORA JSC) established in 1994 on the base of the plant for the production of piezoelectric ceramics, which is used in sonar transducers for submarines and ships; the impact sensors, vibration and acceleration; small-sized electroacoustic transducers; cytotoxicity devices radio and television receivers; devices to ignite gas etc. the Company was run by the Ministry of electronic industry.