
Cixi Three Circle Diesel Engine Co., Ltd. manufactures Tri-Circle brand small air-cooled diesel engines and related power equipment, backed by advanced assembly and testing lines and a long manufacturing heritage.
Cixi Three Circle Diesel Engine Co., Ltd. is a Sino-foreign joint venture founded in 1993 by Cixi General Engine Works and British Crossby Investment Ltd. With roots dating back to 1958, the company has built decades of expertise in agricultural machinery and began producing small air-cooled diesel engines in 1968.
Today, the company operates first-class assembly and testing lines and applies strong technical capabilities to deliver reliable, user-friendly power solutions. Its product portfolio centers on Tri-Circle brand diesel engines, with supporting offerings that include water pumps, generator sets, and complete power units designed for practical field use.
Tri-Circle engines are widely applied across home applications, agriculture, and fishery, and are supplied to customers throughout China as well as overseas markets. The company’s quality focus is reflected in its ISO 9001:2000 quality management system certification and a track record of industry recognition for product quality and service.

Established as Cixi General Engine Works, originally focused on agricultural machinery.
Started producing small-power air-cooled diesel engines.
Cixi Three Circle Diesel Engine Co., Ltd. was founded as a Sino-foreign joint venture.
Equipped with first-class assembly and testing lines, the company supports stable manufacturing and quality control for small diesel engines and related power products.
“Three Circle Engine, Win in Quality, Three Circle Service, Sincere Forever.”
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