Harald Müller Sonder-Metallbau GmbH manufactures sheet metal and pipe components, and builds conference booths and stage structures.

The flight-capable luxury aluminum model airplane, an idea for a niche product by Harald Müller, is now produced in small lots and marketed. The aluminum components are fabricated on machines which include a TruLaser 3030 with 3D CAD software, as well as a TrumaBend V130 (TruBend 5130).