Kazakhstan Temir Zholy (KTZ) is the national railway company. KTZ cooperates with French loco manufacturer Alstom in developing Kazakhstan's railway infrastructure. Alstom has more than 600 staff and two joint ventures with KTZ and its subsidiary in Kazakhstan. In July 2017, Alstom opened its first locomotive repairing center in Kazakhstan. It is the only repairing center in Central Asia and the Caucasus.