Türkiye Demiryolu Makinalarñ Sanayi A.à Â. or TÃÂDEMSAà  was a rail car builder headquartered in Sivas, Turkey. The company was a government owned corporation founded in 1939. TÃÂDEMSAà  is the main supplier of freight cars for the Turkish State Railways. The Y32 bogi was designed by TÃÂDEMSAà Â.