The enterprise was originally founded in Imperial Russia, but it only began producing trolleybuses after 1951. ZiU/Trolza has built over 65,000 trolleybus vehicles and continues this business now. The most numerous models of ZiU production are MTB-82, ZiU-5, ZiU-9. All of them were exported to different countries of the world, including Argentina, Bulgaria, Greece, Mongolia, Hungary, Serbia etc.