China Yuchai International Limited, through its subsidiaries, manufactures, assembles, and sells diesel and natural gas engines for trucks, buses and passenger vehicles, marine, industrial, construction, agriculture, and generator set applications in the People's Republic of China and internationally. It operates through two segments, Yuchai and HLGE. The Yuchai segment manufactures on- and off-road powertrain solutions and applications. The HLGE is engaged in hospitality and property development activities. The company provides diesel engines comprising 4- and 6-cylinder diesel engines, high horsepower marine diesel engines, and power generator engines; natural gas engines, methanol combustion engines, diesel power generators, diesel engine parts, and remanufacturing services; as well as plug in hybrid engines, range extenders, power generation powertrains, hybrid powertrains, integrated electric drive axel powertrains, and fuel cell systems. It also offers maintenance and retrofitting services. It distributes its engines directly to auto original equipment manufacturers, agents, and retailers. The company was founded in 1951 and is based in Singapore.