
FUJIAN DONGYA MACHINERY CO., LTD. manufactures piston rings for gasoline engines, diesel engines, motorcycles and air compressors, supported by in-house R&D and advanced surface-coating capabilities.
FUJIAN DONGYA MACHINERY CO., LTD. is a specialized piston ring manufacturer established in 1988. The company develops and produces piston rings for a wide range of applications, including gasoline engines, diesel engines, motorcycles, general-purpose engines, air compressors and two-stroke engines.
To support long-term product development, the company set up a scientific research and development center in 2002 and has operated a production base in the Xiamen Mechanical and Electrical Industry Park since 2003. It applies advanced manufacturing technology and testing instruments introduced from countries including Germany, Japan and France.
Dongya offers OEM/ODM support and a structured development process from parameter confirmation and design through prototype bench testing to mass production and delivery. The company highlights capabilities in materials research, tribology, experiment and testing, and surface treatment, with established coating options including DLC, PVD, DTC, PCR and nitriding.
In the domestic market, its piston rings have been used as engine installation components by a number of automotive and motorcycle manufacturers and groups, including Harbin Dongan Group, Liuzhou Wuling, Jili Group, Qianjiang Group, Jianshe Group, Lifan Group, Zongshen Group, Loncin Group, Zhongyu Group, and Suzuki motorcycle partners.

The company operates dedicated R&D laboratories equipped with comprehensive testing devices and uses AVL-Excite PR and CAE simulation design to support piston ring development and validation.
Scientific research and development center set up in Xiamen.
First piston ring manufacturer in China to pass ISO/TS16949.
Production basis built in Xiamen Mechanical and Electrical Industry Park.
Martensitic stainless steel nitriding piston rings recognized as a National Key Torch Plan program.
Annual production and marketing volume reported as over 100 million pieces.
The company holds over 50 patents and contributes to revisions of national and industry technical standards.
Advanced manufacturing technology, equipment and detecting instruments are applied for piston ring production, with equipment introduced from Germany, Japan, France and other countries.
In China, the company reports a leading position in piston ring market share for micro-vehicles and motorcycles.
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