Brilliance Auto is a major Chinese automobile manufacturer, and most of its production plants are also located in Shenyang.[86][87] Shenyang Aircraft Corporation produces airplanes for civilian use as well as for the PLAAF.[88] Neusoft Group is the biggest software company in China.[89] Shenyang Machine Tool Group is the largest machine tool manufacturer in China.[90] Tyco International, General Motors and Michelin Shenyang Tyre Corporation are expanding their operations in Shenyang.[citation needed]