
HUAIJI DENGYUN AUTO-PARTS (HOLDING) CO., LTD. specializes in automotive engine valves, offering broad model coverage and large-scale output for OEM and export markets.
HUAIJI DENGYUN AUTO-PARTS (HOLDING) CO., LTD. manufactures automotive engine valves, supplying intake and exhaust valve series for automobiles and special-purpose vehicles, as well as applications in agricultural machinery and marine engines. The company emphasizes advanced manufacturing technology and continuous product development to support demanding engine performance requirements.
With a wide product portfolio, the factory produces more than 8,000 types of engine valves and operates at a stated capacity of 31.5 million pieces annually. Its valves are supplied as OEM products to many domestic auto engine plants, with exports to the United States since 1988 and additional shipments to European markets including Germany, England, and Italy.
The company highlights lean production practices and rigorous quality control, supported by established laboratory testing and comprehensive inspection processes aligned with international quality management requirements. It is certified to ISO/TS 16949:2002.

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Engine valves are supplied as OEM products for a wide range of domestic auto engine plants, supporting stable, long-term production programs.
The factory promotes lean production across workshops, introducing lean production lines and automation to support efficient operations and competitive productivity.
Quality control is built around high standards, dedicated laboratory testing, and a complete inspection workflow, ensuring consistent product performance and reliability.
Established a long-term presence in the U.S. market.
Started construction of a new factory site.
Began supplying Wuxi and UK Perkins.
“Vacuum suction fully automatic CNC flexible production line” started trial production at the new site.
Completed public listing on the Shenzhen Stock Exchange SME Board.