At the six-digit NAICS level, this category narrows to establishments whose primary output is brake systems and brake system components for motor vehicles, including friction pads, rotors, drums, hydraulic actuators, and electronic braking modules. Brake friction materials—particularly those containing specialty minerals—have historically been subject to antidumping proceedings, making origin documentation a compliance priority for aftermarket importers. The shift toward electric vehicles is reshaping demand within this sector, as regenerative braking reduces wear-part replacement cycles while increasing demand for integrated electro-hydraulic brake units.

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