Weichai Heavy Machinery Co., Ltd. develops, manufactures, and sells diesel engines, generating units, and power integration systems for ship power and power generation equipment in China. It offers marine propulsion engines, generator sets, emergency generator sets, and power plant generator systems. The company also provides spare parts and components, such as rough castings; machined parts for engine bodies, cylinder heads, flywheels, front and bearing covers, connecting rods, and crankshafts; and stamping and welding parts, including oil pans, separators, oil gauge tubes, air compressor return tubings, pipes, cover plates, pipe clips, nozzles, retaining rings, brackets, collector filters, and preseparators. Its products are used in the defense, communication, petroleum, medical treatment, plateau, railway, field education and assistance, agriculture, and animal husbandry fields. The company was founded in 1993 and is based in Weifang, China.