
ADD INDUSTRY (ZHE JIANG)CO., LTD. manufactures automotive suspension shock absorbers for passenger and commercial vehicles, combining strong R&D with disciplined quality control for global aftermarket supply.
ADD INDUSTRY (ZHE JIANG)CO., LTD. is the manufacturing arm of the ADD Group in Yuhuan, Zhejiang, bringing together research and development, engineering, manufacturing, quality assurance, and global sales and marketing. The company focuses on automotive suspension system shock absorbers and has developed its own brands, including “Zheng Yu”, “ADD”, and “UNICORN”.
The product portfolio covers a broad range of shock absorbers for passenger and commercial vehicles, organized into multiple series under the company’s technical standards and spanning more than 20,000 varieties. ADD applies contemporary production and quality control techniques and maintains strict internal standards to meet demanding automotive quality requirements.
With a strong export orientation, ADD supplies aftermarket customers worldwide, including markets in America, Europe, Australia, the Middle East, and Southeast Asia. The group also supports original equipment supply for the national brand “CHANG FENG” SUV vehicles and maintains technical exchange and cooperation with industry and academic partners to continuously advance product development.

Manufactures automotive suspension system shock absorbers serving both passenger vehicles and commercial vehicles, with integrated capabilities across R&D, engineering, manufacturing, and quality assurance.
Holds registered international brand marks including “Zheng Yu”, “ADD”, and “UNICORN” in America, Europe, the United Arab Emirates, and other countries.
Shock absorber products cover more than 20,000 varieties and are organized into 9 major series under ADD technical standards, supporting both passenger and commercial vehicle applications.
Operates under the strategy of “ADD VALUE TO CUSTOMER ON QUALITY” and applies internationally adopted production quality control techniques to maintain high product consistency and reliability.
Maintains strict quality standards aligned with the requirements of the National passenger car quality assurance centre, Tianjin vehicle quality assurance centre, and Zhejiang Fangyuan quality-test Company.
Established an R&D centre in 2002, recognized as “Zhejiang province enterprise research centre” in 2005, and developed five series of new products—three certified as “High-technology products of Zhejiang province” and two recognized as “Advanced technology” by the Taizhou city government.
Participates in automotive technology conferences and maintains technical communication with global shock absorber manufacturers including TEENNECO&MONROE and AL-KO, while also keeping relationships with BOSCH and other global companies.
Built a dedicated research and development centre to support product innovation and application engineering.
The R&D centre was awarded “Zhejiang province enterprise research centre” status.
Zhejiang Zhengyu Industrial Co., Ltd. listed on the SSE main board (stock code: 603089) following CSRC approval in 2016.
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