Many major industrial companies have their headquarters in Shenyang. Brilliance Auto is a major Chinese automobile manufacturer. Most of its production plants are also in Shenyang. Shenyang Aircraft Corporation makes airplanes for civilian use as well as for the PLAAF. Neusoft Group is the biggest software company in China. Shenyang Machine Tool Group is the largest machine tool manufacturer in China. Tyco International, General Motors, and Michelin Shenyang Tire Corporation, are expanding their operations in Shenyang due to a deep pool of skilled technical labor; good transportation; low land-use fees; and solid local support.