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About Us
The largest exporter of aftermarket shocks absorbers, struts and complete struts in the world.
Contact Us
943 Gainesville Hwy Bldg 300, Ste 4000, Buford, GA 30518
ADD USA Headquarters
CONTACT: +1-770-238-1611

About Us


PRT is North America’s largest exporter of aftermarket shock absorbers and struts in the world. ADD was the first ride control product manufacturer and more than 25 years later operates three factories that produce nearly 2,000,000 shocks and struts every month.


Customer-Centered Quality

PRT has always focused on offering consistent value to its customers. It does that by adopting and pioneering the most innovative technologies in the industry and applying them to research and development, training, testing, and manufacturing. The manufacturing process has earned the ISO/ TS16949 Quality Management System certification. ADD’s testing center has been developed in accordance with ISO/IEC17025 standards and is also responsive to individual customer needs.

Customers First

PRT’s reputation for quality, complete coverage, advanced features, and built-in profit potential for its customers

cars and shocks for auto supplier


ADD Group provides OEM products and supporting services for some major domestic automobile manufacturers. The quality and performance of shock absorber products meet the OE standards and quality requirements.

ADD Group has established strategic cooperation with globally renowned auto parts manufacturers. Meanwhile, ADD Group is also a partner of many auto parts aftermarket suppliers and large