Trolza
Trolza (Russian: ОАО "Троллейбусный завод" (Тролза)) is a trolleybus producer in Russia, located in Engels, Saratov oblast. In Soviet era it was known as ZiU (Russian: Завод имени Урицкого, Zavod imeni Uritzkogo, plant named after Moisei Uritskiy). The enterprise was founded in Imperial Russia, but it began producing trolleybuses after 1951. ZiU/Trolza 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.