The Type 59D main battle tank is a modernized upgraded Type 59, developed by the Inner-Mongolia First Machinery Group Co. Ltd. (617 Factory) of the CNGC in Baotou, Inner Mongolia. The tank was built from existing Type 59 tanks by adding them with new explosive reaction armor (ERA) plates, night vision, computerized fire-control, and the capability to launch the Chinese indigenous gun-fired laser-guidance anti-tank missile. NORINCO is also promoting the upgrade package to third-world countries which still have large Type 59 and T-54/55 inventories.