ADD-USA is a subsidiary of ADD Industry(Zhejiang)Co.,Ltd, and it is the supplier of the PRT brand of ride control. We are a prime manufacturer headquartered in Yuhuan, China and have over 27 years of experience producing shock absorbers.

For 2020 we will be building the PRT brand in North America.

With our competitive market price, we can offer an OEM quality product and continue to be first to market with the new sku’s needed by our customers.

Also in 2020, ADD is committed to tooling up for both the active suspension and electromagnetic suspension components.

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