Palladium Equity Partners, a private equity firm, completed the acquisition of National Auto Parts USA, a supplier of auto body parts, NAP San Diego, a supplier of auto body parts, and National Auto Parts-Oakland, a auto part store. Financial terms were not disclosed. "We are delighted to partner with Palladium Heritage. With Palladium's resources and expertise, we intend to embark on a focused growth strategy, through adding new locations and completing acquisitions to continue to provide our customers with superior availability and customer service," Ray Tsai, Collision Auto Parts CEO.