The core activity of Käppner Technik GmbH encompasses two main areas:
1. **Engineering and Manufacturing Services**: The company provides precise engineering and innovative manufacturing solutions, including 3D CAD design, 3D scanning, 3D printing, CNC prototype construction, and the production of individual custom parts. It also offers technical consulting and project implementation in the field of vehicle technology, particularly for classic car restorations and special solutions for classics like the VW Beetle.
2. **Car Wash Facility**: The company operates a car wash facility that has been in existence for over 25 years and cleans vehicles.
In addition, the company also sells products such as posters, T-shirts, and car accessories, but this does not appear to be the company's main activity.