Muromskiy Strelochnyi Zavod AO (MSZ AO or Murom Switch Works JSC or SWM JSC) is a Russia-based company active in steel track switching equipment production for railway transport. The Company specializes in the manufacture of range of switches, such as: ordinary, symmetrical, curved, double cross, high-speed and individual. The Company's products core consumer is Muromskaya strelochnaya kompaniya OOO. MSZ AO operates through such wholly owned subsidiaries as: Avtoservis MSZ OOO, PO ZTO OOO and ZTO OOO, located on the territory of Sverdlovsk and Vladimir Regions. The Company's major shareholder is VSP ZAO.
MUROMSKIY STRELOCHNYI ZAVOD AO 
