AC Schnitzer automobile Technik is a third party tuning company based in Aachen, Germany specialising in BMW and MINI cars, as well as BMW motorcycles.

Founded in 1987, it was named after Aachen's licence plate code AC and the Schnitzer/Lamm family that also runs the successful Schnitzer Motorsport team in Bavaria. The Company is now part of the KOHL Automobile GmbH Group, but remains associated with Schnitzer.

(http://en.wikipedia.org)