Changchai Co., Ltd. is an engine manufacturer located in Changzhou, Jiangsu, China. It was originally founded in 1913 as the Houshen Machine-building Factory , an was renamed Changzhou Machine-building factory in 1955. Iny 1964, it was again renamed to Changzhou Diesel Engine Factory. The current name was adopted in 1995. Changchai's engines are used in tractors and two-wheeled tractors such as Changzhou Dongfeng. The company's first joint venture was established in 2001, Fuji Changchai Robin Gasoline Engine Company, with Fuji Heavy Industries and its Robin brand.