
YIZHENG SHUANG HUAN PISTON RING CO., LTD. is a high-tech manufacturer specializing in piston rings and related automotive components, known for wide product variety and large-scale production capacity.
YIZHENG SHUANG HUAN PISTON RING CO., LTD. is a national high-tech enterprise specializing in the R&D, manufacturing, and sales of automotive components. Its core offerings include piston rings, powder metallurgy products such as valve seat rings, guides and structural parts, as well as coating services for automotive parts.
The company supports a broad range of engine applications, including China VI/Euro VI/T4 emission models and gas engines, and serves as a long-term supplier to the majority of domestic OEMs. With a strong focus on product breadth and manufacturing scale, it supplies piston rings in thousands of specifications and maintains high-volume output capabilities.
Internationally, its products are exported to markets across North America, Asia and Europe, including the United States, Japan, Korea, Germany and Russia, reaching nearly 30 countries and regions. The company also established technical cooperation with NPR of Japan and continues to advance product development for demanding powertrain applications.

The company traces its origins to Yizheng Piston Ring Factory.
CYPR was co-established as a joint venture by Yizheng Piston Ring Factory and ASIMCO Technologies Ltd with total investment of CNY 350 million.
Began technological cooperation with NPR of Japan.
Recognized as a leading specialized piston ring producer in China, with the No. 1 ranking for consecutive years in production and sales volume and a strong position in export performance within the sector.
A regular supplier for near 90% of national OEMs, supporting major engine manufacturers across new-emission platforms and a wide range of engine models.
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