Quanchai Engine is a professional engine R&D and manufacturing enterprise in China. It was listed on the Shanghai Stock Exchange in 1998 and owns multiple wholly-owned or holding subsidiaries such as Tianhe Machinery, Oubo Technology, Jintian Machinery, and Yuanjun Hydrogen Energy. The company is a national high-tech enterprise, a national technological innovation demonstration enterprise, a national intellectual property demonstration enterprise, a leading enterprise in China's internal combustion engine industry, a pilot demonstration enterprise for the integration of manufacturing and the internet, and won the Anhui Provincial Government Quality Award in 2021.